Logic gates at the surface code threshold: Superconducting qubits poised for fault-tolerant quantum computing

Abstract

A quantum computer can solve hard problems - such as prime factoring, database searching, and quantum simulation - at the cost of needing to protect fragile quantum states from error. Quantum error correction provides this protection, by distributing a logical state among many physical qubits via quantum entanglement. Superconductivity is an appealing platform, as it allows for constructing large quantum circuits, and is compatible with microfabrication. For superconducting qubits the surface code is a natural choice for error correction, as it uses only nearest-neighbour coupling and rapidly-cycled entangling gates. The gate fidelity requirements are modest: The per-step fidelity threshold is only about 99%. Here, we demonstrate a universal set of logic gates in a superconducting multi-qubit processor, achieving an average single-qubit gate fidelity of 99.92% and a two-qubit gate fidelity up to 99.4%. This places Josephson quantum computing at the fault-tolerant threshold for surface code error correction. Our quantum processor is a first step towards the surface code, using five qubits arranged in a linear array with nearest-neighbour coupling. As a further demonstration, we construct a five-qubit Greenberger-Horne-Zeilinger (GHZ) state using the complete circuit and full set of gates. The results demonstrate that Josephson quantum computing is a high-fidelity technology, with a clear path to scaling up to large-scale, fault-tolerant quantum circuits.

15 pages, 13 figures, including supplementary material

References in corpus (12)

• Charge insensitive qubit design derived from the Cooper pair box
• Surface codes: Towards practical large-scale quantum computation
• Demonstration of Two-Qubit Algorithms with a Superconducting Quantum Processor
• 14-qubit entanglement: creation and coherence
• Robust randomized benchmarking of quantum processes
• Towards fault-tolerant quantum computing with trapped ions
• Fast Scalable State Measurement with Superconducting Qubits
• Evenly distributed unitaries: on the structure of unitary designs
• Characterization of addressability by simultaneous randomized benchmarking
• Process verification of two-qubit quantum gates by randomized benchmarking
• Optimal quantum control of multi-mode couplings between trapped ion qubits for scalable entanglement
• Randomized benchmarking of single and multi-qubit control in liquid-state NMR quantum information processing

Cited by in corpus (973)

• Quantum Computing in the NISQ era and beyond
• Supplementary information for "Quantum supremacy using a programmable superconducting processor"
• Circuit Quantum Electrodynamics
• A Quantum Engineer's Guide to Superconducting Qubits
• Quantum computational chemistry
• Quantum Chemistry in the Age of Quantum Computing
• Superconducting Qubits: Current State of Play
• Topological phases of non-Hermitian systems
• Trapped-Ion Quantum Computing: Progress and Challenges
• Microwave photonics with superconducting quantum circuits
• Characterizing Quantum Supremacy in Near-Term Devices
• Ultrastrong coupling regimes of light-matter interaction
• The Variational Quantum Eigensolver: a review of methods and best practices
• A Two Qubit Logic Gate in Silicon
• State preservation by repetitive error detection in a superconducting quantum circuit
• A >99.9%-fidelity quantum-dot spin qubit with coherence limited by charge noise
• Quantum information processing with superconducting circuits: a review
• Hamiltonian Simulation by Qubitization
• Scalable Quantum Simulation of Molecular Energies
• Demonstration of a small programmable quantum computer with atomic qubits
• High-fidelity two-qubit quantum logic gates using trapped calcium-43 ions
• High-fidelity quantum logic gates using trapped-ion hyperfine qubits
• Training Schrödinger's cat: quantum optimal control
• Elucidating Reaction Mechanisms on Quantum Computers
• A programmable two-qubit quantum processor in silicon
• How to factor 2048 bit RSA integers in 8 hours using 20 million noisy qubits
• Quantum computing with atomic qubits and Rydberg interactions: Progress and challenges
• Quantum optimization using variational algorithms on near-term quantum devices
• Efficient variational quantum simulator incorporating active error minimisation
• Building logical qubits in a superconducting quantum computing system
• Qubit architecture with high coherence and fast tunable coupling
• Efficient Z-Gates for Quantum Computing
• Experimental ten-photon entanglement
• New material platform for superconducting transmon qubits with coherence times exceeding 0.3 milliseconds
• Practical Quantum Error Mitigation for Near-Future Applications
• High-fidelity parallel entangling gates on a neutral atom quantum computer
• Experimental Comparison of Two Quantum Computing Architectures
• Detecting arbitrary quantum errors via stabilizer measurements on a sublattice of the surface code
• Benchmarking an 11-qubit quantum computer
• Qudits and high-dimensional quantum computing
• Towards understanding two-level-systems in amorphous solids -- Insights from quantum circuits
• Fast universal quantum control above the fault-tolerance threshold in silicon
• Quantum autoencoders for efficient compression of quantum data
• Procedure for systematically tuning up crosstalk in the cross resonance gate
• Digitized adiabatic quantum computing with a superconducting circuit
• 10-qubit entanglement and parallel logic operations with a superconducting circuit
• Bidirectional conversion between microwave and light via ferromagnetic magnons
• Fast Scalable State Measurement with Superconducting Qubits
• A Semiconductor Nanowire-Based Superconducting Qubit
• A tunable coupling scheme for implementing high-fidelity two-qubit gates
• Experimental Quantum Computations on a Topologically Encoded Qubit
• Engineering cryogenic setups for 100-qubit scale superconducting circuit systems
• Demonstration of qubit operations below a rigorous fault tolerance threshold with gate set tomography
• Measuring out-of-time-order correlators on a nuclear magnetic resonance quantum simulator
• Silicon CMOS architecture for a spin-based quantum computer
• Transmon qubit with relaxation time exceeding 0.5 milliseconds
• Superconducting Quantum Computing: A Review
• A quantum memory with near-millisecond coherence in circuit QED
• Fidelity benchmarks for two-qubit gates in silicon
• Entangling Atomic Spins with a Strong Rydberg-Dressed Interaction
• Repeated Quantum Error Detection in a Surface Code
• Digital quantum simulation of fermionic models with a superconducting circuit
• Realizing Rapid, High-Fidelity, Single-Shot Dispersive Readout of Superconducting Qubits
• Two-qubit silicon quantum processor with operation fidelity exceeding 99%
• Realization of an Error-Correcting Surface Code with Superconducting Qubits
• QAOA for Max-Cut requires hundreds of qubits for quantum speed-up
• Fluctuations of Energy-Relaxation Times in Superconducting Qubits
• Decoherence benchmarking of superconducting qubits
• Harnessing disordered quantum dynamics for machine learning
• Demonstrating a Continuous Set of Two-qubit Gates for Near-term Quantum Algorithms
• A universal gate for fixed-frequency qubits via a tunable bus
• Rydberg mediated entanglement in a two-dimensional neutral atom qubit array
• Low-distance Surface Codes under Realistic Quantum Noise
• Demonstration of Universal Parametric Entangling Gates on a Multi-Qubit Lattice
• Demonstration of quantum error correction and universal gate set on a binomial bosonic logical qubit
• Halving the cost of quantum addition
• Simulating quantum many-body dynamics on a current digital quantum computer
• Fast quantum logic gates with trapped-ion qubits
• Rapid high-fidelity multiplexed readout of superconducting qubits
• Emulating many-body localization with a superconducting quantum processor
• Cold hybrid ion-atom systems
• Measuring and Suppressing Quantum State Leakage in a Superconducting Qubit
• Quantum Information Scrambling in a Superconducting Qutrit Processor
• 3D integrated superconducting qubits
• Correlated Charge Noise and Relaxation Errors in Superconducting Qubits
• Realization of high-fidelity CZ and ZZ-free iSWAP gates with a tunable coupler
• Experimental fault-tolerant universal quantum gates with solid-state spins under ambient conditions
• The high-coherence fluxonium qubit
• Low-cost error mitigation by symmetry verification
• Experimental Quantum Hamiltonian Learning
• Optimal quantum control using randomized benchmarking
• Hybrid quantum-classical approach to correlated materials
• Quantum memories at finite temperature
• Almost-linear time decoding algorithm for topological codes
• Quantum attacks on Bitcoin, and how to protect against them
• Efficient Algorithms for Maximum Likelihood Decoding in the Surface Code
• Quantum Simulation with Interacting Photons
• Controlling phonons and photons at the wavelength-scale: silicon photonics meets silicon phononics
• Distribution of quantum coherence in multipartite systems
• Correlating decoherence in transmon qubits: Low frequency noise by single fluctuators
• Measurement-induced state transitions in a superconducting qubit: Beyond the rotating wave approximation
• Efficient learning of quantum noise
• High-fidelity, high-scalability two-qubit gate scheme for superconducting qubits
• Analysis of imperfections in the coherent optical excitation of single atoms to Rydberg states
• Silicon qubit fidelities approaching incoherent noise limits via pulse engineering
• Gate Set Tomography
• Dipolar Exchange Quantum Logic Gate with Polar Molecules
• Local and Distributed Quantum Computation
• Genuine 12-qubit entanglement on a superconducting quantum processor
• Demonstration of weight-four parity measurements in the surface code architecture
• Nonreciprocal microwave signal processing with a Field-Programmable Josephson Amplifier
• Scalable quantum circuit and control for a superconducting surface code
• Fast adiabatic qubit gates using only ${\sigma }_z$ control
• Strategies for solving the Fermi-Hubbard model on near-term quantum computers
• Thermal and Residual Excited-State Population in a 3D Transmon Qubit
• A high-sensitivity gate-based charge sensor in silicon
• Quantum error correction with silicon spin qubits
• Tunable Superconducting Qubits with Flux-Independent Coherence
• Topological and subsystem codes on low-degree graphs with flag qubits
• A fast, low-leakage, high-fidelity two-qubit gate for a programmable superconducting quantum computer
• Gradient optimization of analytic controls: the route to high accuracy quantum optimal control
• Quantification and Characterization of Leakage Errors
• Efficient quantum measurement of Pauli operators in the presence of finite sampling error
• Strong environmental coupling in a Josephson parametric amplifier
• Perfect quantum state transfer in a superconducting qubit chain with parametrically tunable couplings
• Observation of directly interacting coherent two-level systems in a solid
• Hardware-efficient quantum random access memory with hybrid quantum acoustic systems
• Silicon quantum processor with robust long-distance qubit couplings
• Single-loop realization of arbitrary non-adiabatic holonomic single-qubit quantum gates in a superconducting circuit
• Demonstration of a High-Fidelity CNOT for Fixed-Frequency Transmons with Engineered ZZ Suppression
• Quantum computing with rotation-symmetric bosonic codes
• Quantum--Classical Interface Based on Single Flux Quantum Digital Logic
• Gate fidelity and coherence of an electron spin in a Si/SiGe quantum dot with micromagnet
• Resource Efficient Zero Noise Extrapolation with Identity Insertions
• Universal gates based on targeted phase shifts in a 3D neutral atom array
• A flexible high-performance simulator for verifying and benchmarking quantum circuits implemented on real hardware
• Measurement of many-body chaos using a quantum clock
• Quantum Conference Key Agreement: A Review
• Three Qubit Randomized Benchmarking
• Digital Quantum Simulation of Minimal AdS/CFT
• Optimizing Quantum Error Correction Codes with Reinforcement Learning
• Indistinguishability of elementary systems as resource for quantum information processing
• Computational advantage of quantum random sampling
• Fluxonium: an alternative qubit platform for high-fidelity operations
• Experimental quantum compressed sensing for a seven-qubit system
• Entanglement by Path Identity
• High-fidelity trapped-ion quantum logic using near-field microwaves
• Subradiant states of quantum bits coupled to a one-dimensional waveguide
• Microwaves in Quantum Computing
• Quantifying the quantum gate fidelity of single-atom spin qubits in silicon by randomized benchmarking
• Suppression of photon shot noise dephasing in a tunable coupling superconducting qubit
• Performing Quantum Computing Experiments in the Cloud
• Interacting two-level defects as sources of fluctuating high-frequency noise in superconducting circuits
• Implementation of Conditional-Phase Gates based on tunable ZZ-Interactions
• Experimental demonstration of a resonator-induced phase gate in a multi-qubit circuit QED system
• A strict experimental test of macroscopic realism in a superconducting flux qubit
• Enhancement in performance of quantum battery by ordered and disordered interactions
• Towards realistic implementations of a Majorana surface code
• 64-Qubit Quantum Circuit Simulation
• High-Fidelity, Frequency-Flexible Two-Qubit Fluxonium Gates with a Transmon Coupler
• Reducing unitary and spectator errors in cross resonance with optimized rotary echoes
• Quantum computers as universal quantum simulators: state-of-art and perspectives
• Exponentially more precise quantum simulation of fermions I: Quantum chemistry in second quantization
• Time-delayed quantum feedback control
• Digital coherent control of a superconducting qubit
• Full-State Quantum Circuit Simulation by Using Data Compression
• Random access quantum information processors
• Observation of topological magnon insulator states in a superconducting circuit
• Entangling logical qubits with lattice surgery
• Machine learning for discriminating quantum measurement trajectories and improving readout
• Correcting coherent errors with surface codes
• Adaptive hybrid optimal quantum control for imprecisely characterized systems
• Fault-Tolerant Logical Gates in the IBM Quantum Experience
• Roadmap to Majorana surface codes
• Comparing Experiments to the Fault-Tolerance Threshold
• Experimental implementation of universal nonadiabatic geometric quantum gates in a superconducting circuit
• Observation of dynamical quantum phase transition by a superconducting qubit simulation
• Quantum computation with universal error mitigation on superconducting quantum processor
• Characterization and Reduction of Capacitive Loss Induced by Sub-Micron Josephson Junction Fabrication in Superconducting Qubits
• Noisy intermediate-scale quantum computers
• Stabilizing entanglement via symmetry-selective bath engineering in superconducting qubits
• 16-qubit IBM universal quantum computer can be fully entangled
• Approximate unitary $t$-designs by short random quantum circuits using nearest-neighbor and long-range gates
• Realization of a $\Lambda$ system with metastable states of a capacitively-shunted fluxonium
• What randomized benchmarking actually measures
• Continuous-variable quantum computing in the quantum optical frequency comb
• High-Fidelity Single-Shot Toffoli Gate via Quantum Control
• Decoding quantum errors with subspace expansions
• Removing leakage-induced correlated errors in superconducting quantum error correction
• Quantum Circuit Refrigerator
• Establishing the Quantum Supremacy Frontier with a 281 Pflop/s Simulation
• High fidelity two-qubit gates on fluxoniums using a tunable coupler
• Non-Abelian $SU(2)$ Lattice Gauge Theories in Superconducting Circuits
• A CNOT gate between multiphoton qubits encoded in two cavities
• Fault-tolerant thresholds for the surface code in excess of 5% under biased noise
• Characterization and reduction of microfabrication-induced decoherence in superconducting quantum circuits
• Tutorial: Gate-based superconducting quantum computing
• Quantum Software Engineering: Landscapes and Horizons
• Diabatic gates for frequency-tunable superconducting qubits
• Direct randomized benchmarking for multi-qubit devices
• Ruling out real-valued standard formalism of quantum theory
• Observation of Floquet states in a strongly driven artificial atom
• Reliable quantum certification for photonic quantum technologies
• Quantum control of bosonic modes with superconducting circuits
• Bounding quantum gate error rate based on reported average fidelity
• Quantum theory of a bandpass Purcell filter for qubit readout
• High-fidelity controlled-Z gate with maximal intermediate leakage operating at the speed limit in a superconducting quantum processor
• Quantum revivals and many-body localization
• Many-Body Quantum Electrodynamics Networks: Non-Equilibrium Condensed Matter Physics with Light
• Quantum crosstalk analysis for simultaneous gate operations on superconducting qubits
• Quantum tomography of an entangled three-spin state in silicon
• Tunable coupler for realizing a controlled-phase gate with dynamically decoupled regime in a superconducting circuit
• Majorana Fermion Surface Code for Universal Quantum Computation
• Quantum Computation Based on Quantum Adiabatic Bifurcations of Kerr-Nonlinear Parametric Oscillators
• Implementation of the XY interaction family with calibration of a single pulse
• Low-loss interconnects for modular superconducting quantum processors
• Superfast encodings for fermionic quantum simulation
• Operation and intrinsic error budget of a two-qubit cross-resonance gate
• Giant spin ensembles in waveguide magnonics
• Asymptotic Improvements to Quantum Circuits via Qutrits
• Optimized Entanglement Purification
• Quantum Power Method by a Superposition of Time-Evolved States
• Superconducting cavity qubit with tens of milliseconds single-photon coherence time
• Variational-State Quantum Metrology
• Architectures for quantum simulation showing a quantum speedup
• A 28nm Bulk-CMOS 4-to-8GHz <2mW Cryogenic Pulse Modulator for Scalable Quantum Computing
• Bravyi-Kitaev Superfast simulation of fermions on a quantum computer
• Solving Systems of Linear Equations with a Superconducting Quantum Processor
• Density-matrix simulation of small surface codes under current and projected experimental noise
• Evolution of Nanowire Transmons and Their Quantum Coherence in Magnetic Field
• Non-Gaussian noise spectroscopy with a superconducting qubit sensor
• High-contrast ZZ interaction using superconducting qubits with opposite-sign anharmonicity
• Digital-Analog Quantum Simulations with Superconducting Circuits
• Gatemon Benchmarking and Two-Qubit Operation
• A shuttling-based two-qubit logic gate for linking distant silicon quantum processors
• Variational Quantum Unsampling on a Quantum Photonic Processor
• Constructing a virtual two-qubit gate by sampling single-qubit operations
• Multistart Methods for Quantum Approximate Optimization
• Fermion-Fermion Scattering in Quantum Field Theory with Superconducting Circuits
• Generation of maximally-entangled long-lived states with giant atoms in a waveguide
• Nonadiabatic holonomic quantum computation with dressed-state qubits
• Continuous-variable geometric phase and its manipulation for quantum computation in a superconducting circuit
• Quantum Algorithms for Fixed Qubit Architectures
• Quantum process tomography of unitary and near-unitary maps
• Qubit metrology of ultralow phase noise using randomized benchmarking
• Automatic differentiation in quantum chemistry with an application to fully variational Hartree-Fock
• Analysis of parametrically driven exchange-type (iSWAP) and two-photon (bSWAP) interactions between superconducting qubits
• Intracity quantum communication via thermal microwave networks
• Generation and verification of 27-qubit Greenberger-Horne-Zeilinger states in a superconducting quantum computer
• An Experimental Microarchitecture for a Superconducting Quantum Processor
• Basic protocols in quantum reinforcement learning with superconducting circuits
• Transmon platform for quantum computing challenged by chaotic fluctuations
• A coaxial line architecture for integrating and scaling 3D cQED systems
• Quantum bits with Josephson junctions
• Overcoming leakage in scalable quantum error correction
• Randomized benchmarking with gate-dependent noise
• Holonomic quantum computation in the ultrastrong-coupling regime of circuit QED
• Nonadiabatic geometric quantum computation with parametrically tunable coupling
• Symmetry-adapted variational quantum eigensolver
• Circuit design implementing longitudinal coupling: a scalable scheme for superconducting qubits
• Decoherence spectroscopy with individual two-level tunneling defects
• Simulating Quantum Materials with Digital Quantum Computers
• A volumetric framework for quantum computer benchmarks
• Quantum Memristors
• The experimental realization of high-fidelity `shortcut-to-adiabaticity' quantum gates in a superconducting Xmon qubit
• The cost of universality: A comparative study of the overhead of state distillation and code switching with color codes
• Rapid and Unconditional Parametric Reset Protocol for Tunable Superconducting Qubits
• A robust entangling gate for polar molecules using magnetic and microwave fields
• Efficient unitary designs with nearly time-independent Hamiltonian dynamics
• High Fidelity Single-qubit Gates of a Single Neutral Atom in the Magic-Intensity Optical Dipole Trap
• Comparing and combining measurement-based and driven-dissipative entanglement stabilization
• Topological pumping of photons in nonlinear resonator arrays
• Designing High-Fidelity Single-Shot Three-Qubit Gates: A Machine Learning Approach
• High contrast qubit interactions using multimode cavity QED
• Integrated tool-set for Control, Calibration and Characterization of quantum devices applied to superconducting qubits
• Simultaneous single-qubit driving of semiconductor spin qubits at the fault-tolerant threshold
• How quickly can anyons be braided? Or: How I learned to stop worrying about diabatic errors and love the anyon
• Restless Tuneup of High-Fidelity Qubit Gates
• Improving the Performance of Deep Quantum Optimization Algorithms with Continuous Gate Sets
• Whole-device entanglement in a 65-qubit superconducting quantum computer
• Quantum logic and entanglement by neutral Rydberg atoms: methods and fidelity
• Accuracy and Resource Estimations for Quantum Chemistry on a Near-term Quantum Computer
• Implementing universal nonadiabatic holonomic quantum gates with transmons
• Advantages of versatile neural-network decoding for topological codes
• Three-dimensional surface codes: Transversal gates and fault-tolerant architectures
• Simulating the performance of a distance-3 surface code in a linear ion trap
• Fractional (Chern and topological) insulators
• Scalable quantum computer with superconducting circuits in the ultrastrong coupling regime
• Demonstration of Controlled-Phase Gates between Two Error-Correctable Photonic Qubits
• Phonon-Mediated Quasiparticle Poisoning of Superconducting Microwave Resonators
• Demonstration of a Parametrically-Activated Entangling Gate Protected from Flux Noise
• Emulating anyonic fractional statistical behavior in a superconducting quantum circuit
• Certifying the building blocks of quantum computers from Bell's theorem
• Single-step implementation of high fidelity $n$-bit Toffoli gate
• Quantum gate learning in engineered qubit networks: Toffoli gate with always-on interactions
• Scalable quantum memory in the ultrastrong coupling regime
• A Reconfigurable Cryogenic Platform for the Classical Control of Scalable Quantum Computers
• Quantum Neural Network for Quantum Neural Computing
• Benchmarking Coherent Errors in Controlled-Phase Gates due to Spectator Qubits
• Flexible superconducting Nb transmission lines on thin film polyimide for quantum computing applications
• Optimized pulse shapes for a resonator-induced phase gate
• Experimental time-optimal universal control of spin qubits in solids
• Long-distance transmon coupler with CZ gate fidelity above $99.8\%$
• Double-sided coaxial circuit QED with out-of-plane wiring
• Compressed sensing quantum process tomography for superconducting quantum gates
• Universal fidelity reduction of quantum operations from weak dissipation
• Reinforcement Learning Decoders for Fault-Tolerant Quantum Computation
• Microwave multimode memory with an Er${}^{3+}$:Y${}_2$SiO${}_5$ spin ensemble
• Broadband Filters for Abatement of Spontaneous Emission in Circuit Quantum Electrodynamics
• Non-exponential Fidelity Decay in Randomized Benchmarking with Low-Frequency Noise
• Fast high fidelity quantum non-demolition qubit readout via a non-perturbative cross-Kerr coupling
• Entanglement spectroscopy of non-Abelian anyons: Reading off quantum dimensions of individual anyons
• Superconducting circuit quantum computing with nanomechanical resonators as storage
• Entanglement purification and protection in a superconducting quantum network
• Deutsch, Toffoli, and CNOT Gates via Rydberg Blockade of Neutral Atoms
• Modeling coherent errors in quantum error correction
• Substrate surface engineering for high-quality silicon/aluminum superconducting resonators
• Universal quantum gates on microwave photons assisted by circuit quantum electrodynamics
• Concentric transmon qubit featuring fast tunability and an anisotropic magnetic dipole moment
• Tunable and Switchable Coupling Between Two Superconducting Resonators
• Probing quantum processor performance with pyGSTi
• Characterization of Leakage Errors via Randomized Benchmarking
• An Introduction to the Transmon Qubit for Electromagnetic Engineers
• Systematic Crosstalk Mitigation for Superconducting Qubits via Frequency-Aware Compilation
• Fast universal quantum gates on microwave photons with all-resonance operations in circuit QED
• Protecting quantum entanglement from leakage and qubit errors via repetitive parity measurements
• Optimization of a solid-state electron spin qubit using Gate Set Tomography
• Using models to improve optimizers for variational quantum algorithms
• Anharmonicity of a Gatemon Qubit with a Few-Mode Josephson Junction
• Benchmarking quantum computers
• High fidelity state preparation, quantum control, and readout of an isotopically enriched silicon spin qubit
• Is quantum computing green? An estimate for an energy-efficiency quantum advantage
• Experimental Estimation of Average Fidelity of a Clifford Gate on a 7-qubit Quantum Processor
• Observation of scalable and deterministic multi-atom Dicke states in an atomic vapor
• Applying quantum algorithms to constraint satisfaction problems
• Probing many-body localization phase transition with superconducting circuits
• Single Flux Quantum-Based Digital Control of Superconducting Qubits in a Multi-Chip Module
• Cellular-automaton decoders for topological quantum memories
• Holonomic Surface Codes for Fault-Tolerant Quantum Computation
• Reducing leakage of single-qubit gates for superconducting quantum processors using analytical control pulse envelopes
• Coherent controlization using superconducting qubits
• Demonstration of Adiabatic Variational Quantum Computing with a Superconducting Quantum Coprocessor
• A Data-Driven Gradient Algorithm for High-Precision Quantum Control
• Noise-correlation spectrum for a pair of spin qubits in silicon
• Realization of efficient quantum gates with a superconducting qubit-qutrit circuit
• Low-cost Fredkin gate with auxiliary space
• Experimental Realization of Two Qutrits Gate with Tunable Coupling in Superconducting Circuits
• Leakage detection for a transmon-based surface code
• Fault-Tolerant Operation of a Quantum Error-Correction Code
• Genetic Algorithms for Digital Quantum Simulations
• The Quantum Socket: Three-Dimensional Wiring for Extensible Quantum Computing
• Fluctuation Theorems for a Quantum Channel
• Self-guaranteed measurement-based quantum computation
• Experimental realisation of multipartite entanglement via quantum Fisher information in a uniform antiferromagnetic quantum spin chain
• Scalable on-chip quantum state tomography
• Optimized heat transfer at exceptional points in quantum circuits
• Quantum network of superconducting qubits through opto-mechanical interface
• Network Community Detection On Small Quantum Computers
• Experimental Characterization of Crosstalk Errors with Simultaneous Gate Set Tomography
• Robust entanglement-based magnetic field sensor beyond the standard quantum limit
• Depth optimization of quantum search algorithms beyond Grover's algorithm
• Majorana loop stabilizer codes for error correction of fermionic quantum simulations
• Fast parametric two-qubit gates with suppressed residual interaction using a parity-violated superconducting qubit
• Continuous wave single photon transistor based on a superconducting circuit
• The boundaries and twist defects of the color code and their applications to topological quantum computation
• Nonadiabatic noncyclic geometric quantum computation in Rydberg atoms
• Analysing correlated noise on the surface code using adaptive decoding algorithms
• Fault-tolerant quantum error correction for Steane's seven-qubit color code with few or no extra qubits
• High-fidelity software-defined quantum logic on a superconducting qudit
• Optimized Surface Code Communication in Superconducting Quantum Computers
• Collective Spin-Light and Light-Mediated Spin-Spin Interactions in an Optical Cavity
• Learning robust control for generating universal quantum gates
• Generating Spatially Entangled Itinerant Photons with Waveguide Quantum Electrodynamics
• Analytical approach to swift nonleaky entangling gates in superconducting qubits
• A logical qubit in a linear array of semiconductor quantum dots
• Geometric formalism for constructing arbitrary single-qubit dynamically corrected gates
• Gate-error analysis in simulations of quantum computers with transmon qubits
• Microwave Boson Sampling
• Dephasing-insensitive quantum information storage and processing with superconducting qubits
• Microwave-to-optical conversion via four-wave-mixing in a cold ytterbium ensemble
• Impact of qubit connectivity on quantum algorithm performance
• Coherent long-distance spin-qubit-transmon coupling
• Demonstration of an All-Microwave Controlled-Phase Gate between Far Detuned Qubits
• Robust quantum compilation and circuit optimisation via energy minimisation
• Verifiable fault-tolerance in measurement-based quantum computation
• Training Optimization for Gate-Model Quantum Neural Networks
• Fault-Tolerant Quantum Computing in the Pauli or Clifford Frame with Slow Error Diagnostics
• Experimental exploration of five-qubit quantum error correcting code with superconducting qubits
• Optimizing quantum gates towards the scale of logical qubits
• Entangling superconducting qubits in a multi-cavity system
• The upside of noise: engineered dissipation as a resource in superconducting circuits
• Experimentally exploring compressed sensing quantum tomography
• Two-way interconversion of millimeter-wave and optical fields in Rydberg gases
• Energy-Efficient Quantum Computing
• Real Randomized Benchmarking
• Realizing a Circuit Analog of an Optomechanical System with Longitudinally Coupled Superconducting Resonators
• Superconducting Quantum Simulator for Topological Order and the Toric Code
• Realization of Superadiabatic Two-qubit Gates Using Parametric Modulation in Superconducting Circuits
• Uncertainty relations in implementation of unitary operations
• Few-qubit quantum-classical simulation of strongly correlated lattice fermions
• Quantum Supremacy Is Both Closer and Farther than It Appears
• Boundaries of quantum supremacy via random circuit sampling
• Mapping of Lattice Surgery-based Quantum Circuits on Surface Code Architectures
• Overhead analysis of universal concatenated quantum codes
• Charge-insensitive single-atom spin-orbit qubit in silicon
• Error per single-qubit gate below $10^{-4}$ in a superconducting qubit
• Quantum Optimization for the Graph Coloring Problem with Space-Efficient Embedding
• Fast holonomic quantum computation on superconducting circuits with optimal control
• Kinetic Inductance Traveling Wave Amplifiers For Multiplexed Qubit Readout
• Quantum Computing: An Overview Across the System Stack
• Fast Generation of GHZ-like States Using Collective-Spin XYZ Model
• Accelerated Randomized Benchmarking
• Majorana Superconducting Qubit
• The SMART protocol -- Pulse engineering of a global field for robust and universal quantum computation
• Scalable in-situ qubit calibration during repetitive error detection
• Approaching the theoretical limit in quantum gate decomposition
• Path toward manufacturable superconducting qubits with relaxation times exceeding 0.1 ms
• Simultaneous gates in frequency-crowded multilevel systems using fast, robust, analytic control shapes
• Observation of Bloch Oscillations and Wannier-Stark Localization on a Superconducting Processor
• Characterizing decoherence rates of a superconducting qubit by direct microwave scattering
• Exciton-Polariton Quantum Gates Based on Continuous Variables
• Dealing with indistinguishable particles and their entanglement
• Suppression of static ZZ interaction in an all-transmon quantum processor
• Inductively shunted transmon qubit with tunable transverse and longitudinal coupling
• Hamiltonian tomography for quantum many-body systems with arbitrary couplings
• High-fidelity and Robust Geometric Quantum Gates that Outperform Dynamical Ones
• Floquet quantum simulation with superconducting qubits
• A blueprint for fault-tolerant quantum computation with Rydberg atoms
• Scalable Method for Eliminating Residual $ZZ$ Interaction between Superconducting Qubits
• Experimental realization of a fast controlled-Z gate via a shortcut-to-adiabaticity
• Multi-qubit Randomized Benchmarking Using Few Samples
• Readout of a quantum processor with high dynamic range Josephson parametric amplifiers
• Interacting Majorana Fermions
• Universal fault-tolerant measurement-based quantum computation
• Benchmarking high fidelity single-shot readout of semiconductor qubits
• Finding the ground state of the Hubbard model by variational methods on a quantum computer with gate errors
• Dipolar Spin Models with Arrays of Superconducting Qubits
• High-fidelity resonator-induced phase gate with single-mode squeezing
• Robust and Fast Holonomic Quantum Gates with Encoding on Superconducting Circuits
• Acousto-optic and opto-acoustic modulation in piezo-optomechanical circuits
• Floquet engineering in superconducting circuits: from arbitrary spin-spin interactions to the Kitaev honeycomb model
• Accounting for Classical Hardware in the Control of Quantum Devices
• Optimal dispersive readout of a spin qubit with a microwave resonator
• Variational quantum compiling with double Q-learning
• Implementation of efficient quantum search algorithms on NISQ computers
• Robust multipartite entanglement generation via a collision model
• A hardware-efficient leakage-reduction scheme for quantum error correction with superconducting transmon qubits
• Experimental Test of Sequential Weak Measurements for Certified Quantum Randomness Extraction
• A taxonomy of small Markovian errors
• Independent, extensible control of same-frequency superconducting qubits by selective broadcasting
• Coupler-Assisted Controlled-Phase Gate with Enhanced Adiabaticity
• Qubit Measurement by Multichannel Driving
• Bounding the average gate fidelity of composite channels using the unitarity
• A leakage-resilient approach to fault-tolerant quantum computing with superconducting elements
• Experimental demonstration of work fluctuations along a shortcut to adiabaticity with a superconducting Xmon qubit
• Demonstration of dynamical control of three-level open systems with a superconducting qutrit
• High Coherence in a Tileable 3D Integrated Superconducting Circuit Architecture
• Improving qubit coherence using closed-loop feedback
• Robust and Efficient Hamiltonian Learning
• Witnessing topological Weyl semimetal phase in a minimal circuit-QED lattice
• Demonstration of acoustic high-order Stiefel-Whitney semimetal in bilayer graphene sonic crystals
• Certifying an irreducible 1024-dimensional photonic state using refined dimension witnesses
• Creation of quantum error correcting codes in the ultrastrong coupling regime
• Fault-tolerant interface between quantum memories and quantum processors
• Neural-network states for the classical simulation of quantum computing
• Quantum Error-Correction-Enhanced Magnetometer Overcoming the Limit Imposed by Relaxation
• Randomized Benchmarking with Restricted Gate Sets
• Device-Independent Verifiable Blind Quantum Computation
• Nonclassicality of induced coherence without induced emission
• Multipartite Entanglement Accumulation in Quantum States: Localizable Generalized Geometric Measure
• Realization of High-Fidelity CZ Gate based on a Double-Transmon Coupler
• Simulating weak localization using superconducting quantum circuits
• Chip-to-chip entanglement of transmon qubits using engineered measurement fields
• Mapping graph state orbits under local complementation
• Yu-Shiba-Rusinov qubit
• Unitary $2$-designs from random $X$- and $Z$-diagonal unitaries
• Randomized benchmarking for individual quantum gates
• Universal non-adiabatic control of small-gap superconducting qubits
• Topological two-dimensional Floquet lattice on a single superconducting qubit
• Estimating the fidelity of T gates using standard interleaved randomized benchmarking
• Collective Strong Coupling with Homogeneous Rabi Frequencies using a 3D Lumped Element Microwave Resonator
• Double-Transmon Coupler: Fast Two-Qubit Gate with No Residual Coupling for Highly Detuned Superconducting Qubits
• Tunable Nb superconducting resonators based upon a Ne-FIB-fabricated constriction nanoSQUID
• A complete Randomized Benchmarking Protocol accounting for Leakage Errors
• Error-transparent quantum gates for small logical qubit architectures
• Quantum metrology beyond the classical limit under the effect of dephasing
• Solution of the two-mode quantum Rabi model using extended squeezed states
• Measuring a transmon qubit in circuit QED: dressed squeezed states
• Single-shot realization of nonadiabatic holonomic gates with a superconducting Xmon qutrit
• Active Readout Error Mitigation
• Resource-Efficient Quantum Computing by Breaking Abstractions
• Error detection on quantum computers improves accuracy of chemical calculations
• Gradient-based closed-loop quantum optimal control in a solid-state two-qubit system
• Unimon qubit
• Demonstration of tunable three-body interactions between superconducting qubits
• Preparation of an Exciton Condensate of Photons on a 53-Qubit Quantum Computer
• Towards a room-temperature spin quantum bus in diamond via optical spin injection, transport and detection
• Joint Quantum-State and Measurement Tomography with Incomplete Measurements
• Simple Impedance Response Formulas for the Dispersive Interaction Rates in the Effective Hamiltonians of Low Anharmonicity Superconducting Qubits
• On Defects Between Gapped Boundaries in Two-Dimensional Topological Phases of Matter
• Implementing and characterizing precise multi-qubit measurements
• Quantum state transfer in a disordered one-dimensional lattice
• Semiconductor-inspired design principles for superconducting quantum computing
• Accrediting outputs of noisy intermediate-scale quantum computing devices
• Variational circuit compiler for quantum error correction
• Realization of a Universal Quantum Gate Set for Itinerant Microwave Photons
• Readout Rebalancing for Near Term Quantum Computers
• Ultrahigh-fidelity spatial mode quantum gates in high-dimensional space by diffractive deep neural networks
• Rolling quantum dice with a superconducting qubit
• Long-range connectivity in a superconducting quantum processor using a ring resonator
• One-photon Solutions to Multiqubit Multimode quantum Rabi model
• Planar multilayer circuit quantum electrodynamics
• Fault-tolerant Quantum Error Correction on Near-term Quantum Processors using Flag and Bridge Qubits
• Multiplexed Readout of Transmon Qubits with Josephson Bifurcation Amplifiers
• Optimal control of two qubits via a single cavity drive in circuit quantum electrodynamics
• Robustness of error-suppressing entangling gates in cavity-coupled transmon qubits
• Securing quantum networking tasks with multipartite Einstein-Podolsky-Rosen steering
• From randomized benchmarking experiments to gateset circuit fidelity: how to interpret randomized benchmarking decay parameters
• Multiqubit and multilevel quantum reinforcement learning with quantum technologies
• Optimal quantum control with poor statistics
• Kinetically Constrained Quantum Dynamics in Superconducting Circuits
• SQUARE: Strategic Quantum Ancilla Reuse for Modular Quantum Programs via Cost-Effective Uncomputation
• Quantum algorithms with local particle number conservation: noise effects and error correction
• Approximate Randomized Benchmarking for Finite Groups
• Decoherence of two entangled spin qubits coupled to an interacting sparse nuclear spin bath: application to nitrogen vacancy centers
• Single temporal-pulse-modulated parameterized controlled-phase gate for Rydberg atoms
• A gate tunable transmon qubit in planar Ge
• Quantum State Optimization and Computational Pathway Evaluation for Gate-Model Quantum Computers
• Handling Leakage with Subsystem Codes
• Digital quantum simulators in a scalable architecture of hybrid spin-photon qubits
• Fault-tolerant qubit from a constant number of components
• Manipulating complex hybrid entanglement and testing multipartite Bell inequalities in a superconducting circuit
• Fast microwave-driven three-qubit gates for cavity-coupled superconducting qubits
• Dense Quantum Measurement Theory
• Optimization of Lattice Surgery is NP-Hard
• Generation and efficient measurement of single photons from fixed frequency superconducting qubits
• Hyperfine-Enhanced Gyromagnetic Ratio of a Nuclear Spin in Diamond
• Modular quantum processor with an all-to-all reconfigurable router
• High-fidelity spatial and polarization addressing of Ca-43 qubits using near-field microwave control
• Accelerating adiabatic protocols for entangling two qubits in circuit QED
• General purpose multiplexing device for cryogenic microwave systems
• Bootstrapping quantum process tomography via a perturbative ansatz
• Superconducting qubits on silicon substrates for quantum device integration
• Ideal Quantum Nondemolition Readout of a Flux Qubit Without Purcell Limitations
• Demonstrating non-Abelian statistics of Majorana fermions using twist defects
• Artificial Life in Quantum Technologies
• Experimental study of optimal measurements for quantum state tomography
• High fidelity readout scheme for rare-earth solid state quantum computing
• Quantum Teleportation-Inspired Algorithm for Sampling Large Random Quantum Circuits
• A practical phase gate for producing Bell violations in Majorana wires
• A circuit-level protocol and analysis for twist-based lattice surgery
• Spatially Adiabatic Frequency Conversion in Optoelectromechanical Arrays
• Demonstration of a non-Abelian geometric controlled-Not gate in a superconducting circuit
• Annulled van der Waals interaction and fast Rydberg quantum gates
• Qubit Parity Measurement by Parametric Driving in Circuit QED
• Independent State and Measurement Characterization for Quantum Computers
• Lattice Surgery Translation for Quantum Computation
• Robust quantum state transfer using tunable couplers
• High-fidelity gate set for exchange-coupled singlet-triplet qubits
• Optimal quantum operations at zero energy cost
• Superrobust Geometric Control of a Superconducting Circuit
• Single-Shot Readout of a Superconducting Qubit Using a Thermal Detector
• Superconducting grid-bus surface code architecture for hole-spin qubits
• Nonadiabatic holonomic quantum computation on coupled transmons with ancillaries
• Fermionic Models with Superconducting Circuits
• Universal two-qubit interactions, measurement and cooling for quantum simulation and computing
• QVECTOR: an algorithm for device-tailored quantum error correction
• Validating and controlling quantum enhancement against noise by motion of a qubit
• Epitaxial Superconductor-Semiconductor Two-Dimensional Systems for Superconducting Quantum Circuits
• Experimental Simulation of Larger Quantum Circuits with Fewer Superconducting Qubits
• Influence of ground-Rydberg coherence in two-qubit gate based on Rydberg blockade
• Ergodic-localized junctions in a periodically-driven spin chain
• Quantum storage in quantum ferromagnets
• Multiparametric Amplification and Qubit Measurement with a Kerr-free Josephson Ring Modulator
• Pseudo-2D superconducting quantum computing circuit for the surface code: the proposal and preliminary tests
• Noise Thresholds for the [[4, 2, 2]]-concatenated Toric Code
• Quantum trajectories of superconducting qubits
• High-fidelity single-spin shuttling in silicon
• Path-optimized nonadiabatic geometric quantum computation on superconducting qubits
• Twin Photon Correlations in Single-Photon Interference
• Quantum Origami: Transversal Gates for Quantum Computation and Measurement of Topological Order
• Coherent dynamics and decoherence in a superconducting weak link
• Estimating gate-set properties from random sequences
• Quantum Circuit Design for Objective Function Maximization in Gate-Model Quantum Computers
• Two-Stroke Optimization Scheme for Mesoscopic Refrigerators
• Experimental Quantum Randomness Processing
• Switchable next-nearest-neighbor coupling for controlled two-qubit operations
• Pairwise tomography networks for many-body quantum systems
• Resonant shortcuts for adiabatic rapid passage with only $z$-field control
• Implementation of a generalized CNOT gate between fixed-frequency transmons
• Spintronics with graphene quantum dots
• Majorana Spin Liquids, Topology and Superconductivity in Ladders
• Quantum Computation with Topological Codes: from qubit to topological fault-tolerance
• Concise analytic solutions to the quantum Rabi model with two arbitrary qubits
• Hybrid controlled-SUM gate with one superconducting qutrit and one cat-state qutrit and application in hybrid entangled state preparation
• Two-Qubit Pulse Gate for the Three-Electron Double Quantum Dot Qubit
• Cross cross resonance gate
• Simultaneous excitation of two noninteracting atoms with time-frequency correlated photon pairs in a superconducting circuit
• The dynamical-decoupling-based spatiotemporal noise spectroscopy
• Multi-mode architectures for noise-resilient superconducting qubits
• Quantum control for high-fidelity multi-qubit gates
• Variationally Scheduled Quantum Simulation
• Quantum phase transition in a multi-connected superconducting Jaynes-Cummings lattice
• Proposal for entangling gates on fluxonium qubits via a two-photon transition
• Forecasting timelines of quantum computing
• Hierarchical surface code for network quantum computing with modules of arbitrary size
• One-way quantum computing in superconducting circuits
• Toroidal qubits: naturally-decoupled quiet artificial atoms
• An argon ion beam milling process for native ${\text{AlO}}_{\text{x}}$ layers enabling coherent superconducting contacts
• Entangling two distant non-interacting microwave modes
• Correlated vs. uncorrelated noise acting on a quantum refrigerator
• Single-step implementation of a hybrid controlled-NOT gate with one superconducting qubit simultaneously controlling multiple target cat-state qubits
• Quantum chaos, equilibration and control in extremely short spin chains
• Creating and manipulating a Laughlin-type $\nu =1/3$ fractional quantum Hall state on a quantum computer with linear depth circuits
• Experimental Bayesian calibration of trapped ion entangling operations
• A Practical Introduction to Benchmarking and Characterization of Quantum Computers
• Growth of genuine multipartite entanglement in random unitary circuits
• Constructing Clock-Transition-Based Two-Qubit Gates from Dimers of Molecular Nanomagnets
• Parafermions in a Kagome lattice of qubits for topological quantum computation
• Efficient Unitarity Randomized Benchmarking of Few-qubit Clifford Gates
• Topology-dependent quantum dynamics and entanglement-dependent topological pumping in superconducting qubit chains
• Demonstrating scalable randomized benchmarking of universal gate sets
• Superconducting qubits beyond the dispersive regime
• A Quantum von Neumann Architecture for Large-Scale Quantum Computing
• Majorana Qubit Readout Using Longitudinal Qubit-Resonator Interaction
• Intermodulation Distortion in a Josephson Traveling Wave Parametric Amplifier
• Extensible 3D architecture for superconducting quantum computing
• Numerical Implementation of Just-In-Time Decoding in Novel Lattice Slices Through the Three-Dimensional Surface Code
• Controllable high-fidelity quantum state transfer and entanglement generation in circuit QED
• A local and scalable lattice renormalization method for ballistic quantum computation
• Qubit measurement error from coupling with a detuned neighbor in circuit QED
• Exact quantization of superconducting circuits
• Feedback Ansatz for Adaptive-Feedback Quantum Metrology Training with Machine Learning
• Flexible Coaxial Ribbon Cable for High-Density Superconducting Microwave Device Arrays
• Nonadiabatic geometric quantum gates that are insensitive to qubit-frequency drifts
• Quantum chemistry and charge transport in biomolecules with superconducting circuits
• Quantum control of frequency tunable transmon superconducting qubits
• 30 GHz-voltage controlled oscillator operating at 4 K
• Error tolerance of topological codes with independent bit-flip and measurement errors
• Native approach to controlled-Z gates in inductively coupled fluxonium qubits
• Gate control of superconducting current: Mechanisms, parameters and technological potential
• All-microwave manipulation of superconducting qubits with a fixed-frequency transmon coupler
• Cavity Control over Heavy-Hole Spin Qubits in Inversion-Symmetric Crystals
• Boundary transfer matrix spectrum of measurement-induced transitions
• Study of Decoherence in Quantum Computers: A Circuit-Design Perspective
• Optimization of CNOT circuits on limited connectivity architecture
• The role of entropy in topological quantum error correction
• Programming a quantum computer with quantum instructions
• Speeding up adiabatic passage with an optimal modified Roland-Cerf protocol
• Parallel entangling gate operations and two-way quantum communication in spin chains
• Quantifying information scrambling via Classical Shadow Tomography on Programmable Quantum Simulators
• Anonymous broadcasting of classical information with a continuous-variable topological quantum code
• Control and mitigation of microwave crosstalk effect with superconducting qubits
• Beating the thermal limit of qubit initialization with a Bayesian Maxwell's demon
• Randomized Benchmarking under Different Gatesets
• Quantum phases of a chain of strongly interacting anyons
• Tunable coupling of widely separated superconducting qubits: A possible application towards a modular quantum device
• Noncyclic Geometric Quantum Gates with Smooth Paths via Invariant-based Shortcuts
• Hardware-efficient fermionic simulation with a cavity-QED system
• Demonstrating Quantum Error Correction that Extends the Lifetime of Quantum Information
• Effects of gate errors in digital quantum simulations of fermionic systems
• Synthetic gauge field and chiral physics on two-leg superconducting circuits
• Coupler-Assisted Leakage Reduction for Scalable Quantum Error Correction with Superconducting Qubits
• Quantum Simulation of Spin Chains Coupled to Bosonic Modes with Superconducting Circuits
• Hybrid benchmarking of arbitrary quantum gates
• Twins Percolation for Qubit Losses in Topological Color Codes
• Blind quantum computation for a user who only performs single-qubit gates
• Magic State Distillation and Gate Compilation in Quantum Algorithms for Quantum Chemistry
• Soft Decoding of a Qubit Readout Apparatus
• Analytical solutions of basic models in quantum optics
• Tunable quantum gate between a superconducting atom and a propagating microwave photon
• Phase boundaries in alternating field quantum XY model with Dzyaloshinskii-Moriya interaction: Sustainable entanglement in dynamics
• Spatial, spin, and charge symmetry projections for a Fermi-Hubbard model on a quantum computer
• Transition Slow-Down by Rydberg Interaction of Neutral Atoms and a Fast Controlled-NOT Quantum Gate
• One-dimensional quantum computing with a 'segmented chain' is feasible with today's gate fidelities
• Efficient Measurement of Multiparticle Entanglement with Embedding Quantum Simulator
• Topological-Graph Dependencies and Scaling Properties of a Heuristic Qubit-Assignment Algorithm
• Qubit gates using hyperbolic secant pulses
• High speed flux sampling for tunable superconducting qubits with an embedded cryogenic transducer
• Single-photon switch controlled by a qubit embedded in an engineered electromagnetic environment
• Beyond adiabatic elimination: Effective Hamiltonians and singular perturbation
• Realisation of adiabatic and diabatic CZ gates in superconducting qubits coupled with a tunable coupler
• Josephson parametric reflection amplifier with integrated directionality
• Quantum leakage detection using a model-independent dimension witness
• Spectral Quantum Tomography
• Uniform Decoherence Effect on Localizable Entanglement in Random Multi-qubit Pure States
• Performance optimization for drift-robust fidelity improvement of two-qubit gates
• Determination of the Semion Code Threshold using Neural Decoders
• Quantum computer-aided design: digital quantum simulation of quantum processors
• Majorana braiding gates for topological superconductors in a one dimensional geometry
• High-Fidelity Spin Measurement on the Nitrogen-Vacancy Center
• ScQ cloud quantum computation for generating Greenberger-Horne-Zeilinger states of up to 10 qubits
• Characterization of hidden modes in networks of superconducting qubits
• Classical Chaos in Quantum Computers
• Engineering adiabaticity at an avoided crossing with optimal control
• Fault-tolerant Holonomic Quantum Computation in Surface Codes
• Effects of lasing in a one-dimensional quantum metamaterial
• Superconducting coplanar microwave resonators with operating frequencies up to 50 GHz
• Realization of fast all-microwave CZ gates with a tunable coupler
• A Hybrid Rydberg Quantum Gate for Quantum Network
• Performance of Superconducting Quantum Computing Chips under Different Architecture Design
• Estimating localizable entanglement from witnesses
• Fault-tolerant gates via homological product codes
• Optimal quantum control via genetic algorithms for quantum state engineering in driven-resonator mediated networks
• Refocusing two qubit gate noise for trapped ions by composite pulses
• Shortcut to adiabaticity in a Stern-Gerlach apparatus
• Scalable characterization of localizable entanglement in noisy topological quantum codes
• Quantum interference device for controlled two-qubit operations
• Noise threshold and resource cost of fault-tolerant quantum computing with Majorana fermions in hybrid systems
• Gutzwiller wave function on a quantum computer using a discrete Hubbard-Stratonovich transformation
• Randomized benchmarking of quantum gates implemented by electron spin resonance
• Optimization of Controlled-Z Gate with Data-Driven Gradient Ascent Pulse Engineering in a Superconducting Qubit System
• Fast, high precision dynamics in quantum optimal control theory
• A simultaneous feedback and feed-forward control and its application to realize a random walk on the Bloch sphere in a superconducting Xmon-qubit system
• A Quantum Interior-Point Predictor-Corrector Algorithm for Linear Programming
• Impact of decoherence on the fidelity of quantum gates leaving the computational subspace
• Deterministic Quantum Dense Coding Networks
• Exact solvability, non-integrability, and genuine multipartite entanglement dynamics of the Dicke model
• Optimization of the Memory Reset Rate of a Quantum Echo-State Network for Time Sequential Tasks
• Always-On Quantum Error Tracking with Continuous Parity Measurements
• Efficient Preparation of Large Block Code Ancilla States for Fault-tolerant Quantum Computation
• Scalable Fermionic Error Correction in Majorana Surface Codes
• Scalable nonadiabatic holonomic quantum computation on a superconducting qubit lattice
• Quantum analysis of second-order effects in superconducting travelling-wave parametric amplifiers
• Neural network decoder for near-term surface-code experiments
• Anyons are not energy eigenspaces of quantum double Hamiltonians
• Materials for Quantum Technologies: a Roadmap for Spin and Topology
• Error-correction and noise-decoherence thresholds for coherent errors in planar-graph surface codes
• Scale-invariant freezing of entanglement
• Closing a quantum feedback loop inside a cryostat: Autonomous state preparation and long-time memory of a superconducting qubit
• Micromotion-Enhanced Fast Entangling Gates For Trapped Ion Quantum Computing
• Decoherence of up to 8-qubit entangled states in a 16-qubit superconducting quantum processor
• Microwave Packaging for Superconducting Qubits
• Coulomb interaction-driven entanglement of electrons on helium
• Randomized Benchmarking as Convolution: Fourier Analysis of Gate Dependent Errors
• A controllable two-qubit swapping gate using superconducting circuits
• A Toffoli Gate Decomposition via Echoed Cross-Resonance Gates
• Enhancement of entanglement in distant micromechanical mirrors using parametric interactions
• Benchmarking quantum logic operations relative to thresholds for fault tolerance
• A hybrid-qudit representation of digital RGB images
• Calibration of cryogenic amplification chains using normal-metal--insulator--superconductor junctions
• Hardware-Conscious Optimization of the Quantum Toffoli Gate
• Error Suppression for Arbitrary-Size Black Box Quantum Operations
• Machine-learning based three-qubit gate for realization of a Toffoli gate with cQED-based transmon systems
• Functional completeness of planar Rydberg blockade structures
• Fabrication of the impedance-matched Josephson parametric amplifier and the study of the gain profile
• Operational, gauge-free quantum tomography
• Doubled Color Codes
• An Abstract Model and Efficient Routing for Logical Entangling Gates on Zoned Neutral Atom Architectures
• Universal distributed quantum computing on superconducting qutrits with dark photons
• Exploiting dynamic quantum circuits in a quantum algorithm with superconducting qubits
• Development of transmon qubits solely from optical lithography on 300mm wafers
• Emergent topological excitations in a two-dimensional quantum spin system
• Comparative study of quantum error correction strategies for the heavy-hexagonal lattice
• Superconducting qubit circuit emulation of a vector spin-1/2
• A random-walk benchmark for single-electron circuits
• Site-wise manipulations and Mott insulator-superfluid transition of interacting photons using superconducting circuit simulators
• Fully scalable randomized benchmarking without motion reversal
• Synthesis of Arbitrary Quantum Circuits to Topological Assembly: Systematic, Online and Compact
• State Stabilization for Gate-Model Quantum Computers
• Qubit dephasing due to Quasiparticle Tunneling
• Microwave-based Arbitrary CPHASE Gates for Transmon Qubits
• Topological Dynamical Decoupling
• Leakage Suppression for Holonomic Quantum Gates
• Error correction for gate operations in systems of exchange-coupled singlet-triplet qubits in double quantum dots
• Destroying a topological quantum bit by condensing Ising vortices
• Compact vacuum gap transmon qubits: Selective and sensitive probes for superconductor surface losses
• Quantum Control via Stimulated Raman User-defined Passage
• Adaptive Rotating-Wave Approximation for Driven Open Quantum Systems
• Baseband control of superconducting qubits with shared microwave drives
• Feasibility of single-shot realizations of conditional three-qubit gates in exchange-coupled qubit arrays with local control
• A high-efficiency plug-and-play superconducting qubit network
• Entanglement-enhanced sensing using a chain of qubits with always-on nearest-neighbor interactions
• Non-perturbative analytical diagonalization of Hamiltonians with application to coupling suppression and enhancement in cQED
• Asymptotically Optimal Circuit Depth for Quantum State Preparation and General Unitary Synthesis
• Single-step transfer or exchange of multipartite quantum entanglement with minimum resources
• Benchmarks of Nonclassicality for Qubit Arrays
• Protection of a qubit with a subradiance effect: Josephson quantum filter
• Coherent manipulation of nuclear spins in the strong driving regime
• Purification and switching protocols for dissipatively stabilized entangled qubit states
• 99.9%-fidelity in measuring a superconducting qubit
• Designing globally optimal entangling gates using geometric space curves
• Decoding Schemes for Foliated Sparse Quantum Error Correcting Codes
• Coherent Control with User-Defined Passage
• Quantum Simulation of the Fermion-Boson Composite Quasi-Particles with a Driven Qubit-Magnon Hybrid Quantum System
• Softening of Majorana edge states by long-range couplings
• A universal quantum gate set for transmon qubits with strong ZZ interactions
• Universal Robust Geometric Quantum Control via Geometric Trajectory Correction
• Mitigating coherent leakage of superconducting qubits in a large-scale quantum socket
• Noise-resilient preparation of quantum many-body ground states
• Microwave-activated gates between a fluxonium and a transmon qubit
• Universal Barenco quantum gates via a tunable non-collinear interaction
• NSQUID arrays as conveyers of quantum information
• Improved Quantum State Tomography for the Systems with XX+YY Couplings and Z Readouts
• Comparing randomized benchmarking figure with average infidelity of quantum gate-set
• Low-temperature environments for quantum computation and quantum simulation
• A three-dimensional Josephson parametric amplifier
• Co-Designed Architectures for Modular Superconducting Quantum Computers
• Engineering Quantum Spin Liquids and Many-Body Majorana States with a Driven Superconducting Box Circuit
• Error-Tolerant Geometric Quantum Control for Logical Qubits with Minimal Resource
• Three-qubit direct dispersive parity measurement with Tunable Coupling Qubits
• Non-Pauli errors can be efficiently sampled in qudit surface codes
• Semiclassical approach to finite temperature quantum annealing with trapped ions
• Strong entanglement of spins inside a quantum domain wall
• Designing arbitrary single-axis rotations robust against perpendicular time-dependent noise
• Two-qubit gate in neutral atoms using transitionless quantum driving
• Applicability of Measurement-based Quantum Computation towards Physically-driven Variational Quantum Eigensolver
• Quantum metrology based on symmetry-protected adiabatic transformation: Imperfection, finite time duration, and dephasing
• Reconfigurable quantum logic gates using Rashba controlled spin polarized currents
• Superharmonic Resonances in a Strongly Coupled Cavity-Atom System
• High-fidelity and robust controlled-Z gates implemented with Rydberg atoms via echoing rapid adiabatic passage
• Reconfigurable re-entrant cavity for wireless coupling to an electro-optomechanical device
• A toy model for time evolving QFT on a lattice with controllable chaos
• Accurate and robust unitary transformation of a high-dimensional quantum system
• Reconstructing the ideal results of a perturbed analog quantum simulator
• Single-photon-added coherent state based measurement transition and its advantages in precision measurement
• Emergence of entanglement with temperature and time in factorization-surface states
• Realizing a class of stabilizer quantum error correction codes using a single ancilla and circular connectivity
• Monogamy of Logarithmic Negativity and Logarithmic Convex-Roof Extended Negativity
• The effect of interactions and disorder on the relaxation of two-level systems in amorphous solids
• Approximate exchange-only entangling gates for the three-spin-$1/2$ decoherence-free subsystem
• Understanding the dynamics of randomly positioned dipolar spin ensembles
• Characterization of Broadband Purcell Filters with Compact Footprint for Fast Multiplexed Superconducting Qubit Readout
• Designing fast quantum gates using optimal control with a reinforcement-learning ansatz
• Magnon-mediated quantum gates for superconducting qubits
• Rabi oscillations of two-photon states in nonlinear optical resonators
• Vortex-Meissner phase transition induced by two-tone-drive-engineered artificial gauge potential in the fermionic ladder constructed by superconducting qubit circuits
• Preparing Greenberger-Horne-Zeilinger state on ground levels of neutral atoms
• Simulation of a feedback-based algorithm for quantum optimization for a realistic neutral atom system with an optimized small-angle controlled-phase gate
• Remote Cross-resonance Gate between Superconducting Fixed-frequency Qubits
• Perfect state transfer on hypercubes and its implementation using superconducting qubits
• Strictly local one-dimensional topological quantum error correction with symmetry-constrained cellular automata
• Decoherence and Interferometric Sensitivity of BosonSampling in Superconducting Networks
• Construction of non-convex polynomial loss functions for training a binary classifier with quantum annealing
• Emulating quantum state transfer through a spin-1 chain on a 1D lattice of superconducting qutrits
• Trapped-ion quantum error-correcting protocols using only global operations
• When can a local Hamiltonian be recovered from a steady state?
• Cooperative engineering the multiple radio-frequency fields to reduce the X-junction barrier for ion trap chips
• Demonstration of a general fault-tolerant quantum error detection code for (2n+1)-qubit entangled state on IBM 16-qubit quantum computer
• Scalable fast benchmarking for individual quantum gates with local twirling
• Electromechanical Quantum Simulators
• Geometric correspondence of noisy quantum dynamics and universal robust quantum gates
• The superconducting circuit companion -- an introduction with worked examples
• Hybrid Exchange Measurement-Based Qubit Operations in Semiconductor Double Quantum Dot Qubits
• Parallel Quantum Computing Emulation
• Estimating the error of an analog quantum simulator by additional measurements
• Faithful Simulation and Detection of Quantum Spin Hall Effect on Superconducting Circuits
• Improved superconducting qubit state readout by path interference
• Reliable Characterization for Improving and Validating Accurate Quantum Operations
• Material matters in superconducting qubits
• Realization of Constant-Depth Fan-Out with Real-Time Feedforward on a Superconducting Quantum Processor
• Quantum codes from classical graphical models
• Minimal Time Robust Control for Two Superconducting Qubits
• Graph-Theoretic Approach to Quantum Error Correction
• Controlling gain with loss: Bounds on localizable entanglement in multi-qubit systems
• High-speed quantum networking by ship
• Windowed quantum arithmetic
• Capacitively Shunted Double-Transmon Coupler Realizing Bias-Free Idling and High-Fidelity CZ Gate
• A quantum interface to charged particles in a vacuum
• Sub-Harmonic Control of a Fluxonium Qubit via a Purcell-Protected Flux Line
• Calibrating quantum gates up to 52 qubits in a superconducting processor
• Controlling nonergodicity in quantum many-body systems by reinforcement learning
• Quantum sensing of weak electric and magnetic fields by coherent amplification of energy level shift effects
• Verification of a resetting protocol for an uncontrolled superconducting qubit
• Stable and low loss oxide layer on α-Ta (110) film for superconducting qubits
• Comparing planar quantum computing platforms at the quantum speed limit
• Effect of Decoherence for Gate Operations on a Superconducting Bosonic Qubit
• Localizing genuine multiparty entanglement in noisy stabilizer states
• Revealing inherent quantum interference and entanglement of a Dirac particle
• The design of an experimental platform for hybridization of atomic and superconducting quantum systems
• Error correcting power of small topological codes
• Integrated information storage and transfer with a coherent magnetic device
• Quantum Simulation of Pairing Hamiltonians with Nearest-Neighbor Interacting Qubits
• Gap resonance in the classical dynamics of the current-biased Josephson tunnel junctions
• Strong coupling and active cooling in a finite temperature hybrid atom-cavity system
• Optically Controlled Entangling Gates in Randomly Doped Silicon
• Efficient multi-qubit subspace rotations via topological quantum walks
• Refocusing two qubit gates with measurements for trapped ions
• The two-qubit amplitude damping channel: characterization using quantum stabilizer codes
• Quantum state transfer using 1D Heisenberg Hamiltonian on quasi-1D lattices
• Numerical evaluation of the fidelity error threshold for the surface code
• Qubit Energy Tuner Based on Single Flux Quantum Circuits
• A Theory of Direct Randomized Benchmarking
• Matrix concentration inequalities and efficiency of random universal sets of quantum gates
• One-step implementation of nonadiabatic geometric fSim gate in superconducting circuits
• Above 99.9% Fidelity Single-Qubit Gates, Two-Qubit Gates, and Readout in a Single Superconducting Quantum Device
• Measurement-based interleaved randomised benchmarking using IBM processors
• Two-dimensional topological effect in a transmon qubit array with tunable couplings
• Integrating Quantum Processor Device and Control Optimization in a Gradient-based Framework
• The role of interparticle interaction and environmental coupling in a two-particle open quantum system
• Sampling Groups of Pauli Operators to Enhance Direct Fidelity Estimation
• Local Gradient Optimization of Modular Entangling Sequences
• Random Quantum Circuits with Time-Reversal Symmetry
• Pursuing high-fidelity control of spin qubits in natural Si/SiGe quantum dot
• Quantum computation with noisy operations
• Analyzing the spectral density of a perturbed analog quantum simulator using Keldysh formalism
• Violating the Modified Helstrom Bound with Nonprojective Measurements
• Scalable quantum computation architecture using always-on Ising interactions via quantum feedforward
• Quantum Gates Between Mesoscopic Spin Ensembles
• Distribution of entanglement with variable range interactions
• Decoherence-free propagation and ramification of a solitary pulse
• Achieving the Heisenberg limit of metrology via measurement on an ancillary qubit
• High Quality Stepped-Impedance Resonators Suitable for Circuit-QED Measurement of Superconducting Artificial Atoms
• Circuit quantum electrodynamics: A new look toward developing full-wave numerical models
• Interaction induced non-reciprocal three-level quantum transport
• Hybrid Quantum Interferometer in Bifurcation Mode as a Latching Quantum Readout
• Practical quantum error correction with the XZZX code and Kerr-cat qubits
• Single-shot quantum error correction with the three-dimensional subsystem toric code
• A practical guide for building superconducting quantum devices
• Resource comparison of two surface code implementations of small angle Z rotations
• Estimating entanglement in 2D Heisenberg model in the strong rung-coupling limit
• Revealing correlated noise with single-qubit operations
• Policy Gradient Approach to Compilation of Variational Quantum Circuits
• Higher-order protection of quantum gates: Hamiltonian engineering coordinated with dynamical decoupling
• Universal set of Dynamically Protected Gates for Bipartite Qubit Networks II: Soft Pulse Implementation of the [[5,1,3]] Quantum Error Correcting Code
• Simulation of the many-body dynamical quantum Hall effect in an optical lattice
• Analysis of the spectroscopy of a hybrid system composed of a superconducting flux qubit and diamond NV centers
• Pinned QMA: The power of fixing a few qubits in proofs
• Characterization of a quantum bus between two driven qubits
• Clifford group restricted eavesdroppers in quantum key distribution
• QROSS: QUBO Relaxation Parameter Optimisation via Learning Solver Surrogates
• An Economic Model for Quantum Key-Recovery Attacks against Ideal Ciphers
• Enhancing multi-step quantum state tomography by PhaseLift
• Accurate Qubit Control with Single Flux Quantum Pulses
• Application of Optimal Control to Time-Resolution Protocol for Quantum Sensing
• Relative resilience to noise of standard and sequential approaches to measurement-based quantum computation
• Performance-centric roadmap for building a superconducting quantum computer
• Single-step multipartite entangled states generation from coupled circuit cavities
• Characterization of multi-level dynamics and decoherence in a high-anharmonicity capacitively shunted flux circuit
• Analog Errors in Quantum Annealing: Doom and Hope
• Sparse Non-Markovian Noise Modeling of Transmon-Based Multi-Qubit Operations
• A slightly smaller surface code S gate
• Preparing topologically ordered states by Hamiltonian interpolation
• Speckle statistics of entangled photons
• Perturbative tomography of small errors in quantum gates
• Fast non-Abelian geometric gates via transitionless quantum driving
• High-fidelity initialization a logical qubit with multiple injections
• Making high-quality quantum microwave devices with van der Waals superconductors
• Hardware-efficient quantum annealing with error mitigation via classical shadow
• Generation of time-frequency entangled photon pairs propagating in separate waveguides in circuit QED setup
• Robustness of a universal gate set implementation in transmon systems via Chopped Random Basis optimal control
• Error-mitigated initialization of surface codes with non-Pauli stabilizers
• Position-momentum entangled photon pairs in non-linear wave-guides and transmission lines
• Mitigation of systematic amplitude error in nonadiabatic holonomic operations
• Work-sharing of qubits in topological error corrections
• Robust shaped pulses for arrays of superconducting or semiconductor spin qubits with fixed Ising coupling
• Mapping quantum chemical dynamics problems onto spin-lattice simulators
• Mapping Surface Code to Superconducting Quantum Processors
• Nonreciprocal routing induced by chirality in an atom-dimer waveguide-QED system
• Classical Control of Large-Scale Quantum Computers
• Dominant vibronic relaxation channels in a europium-based molecular qubit
• Quantum state transfer and controlled-phase gate on one-dimensional superconducting resonators assisted by a quantum bus
• Construction of controlled-NOT gate based on microwave-activated phase (MAP) gate in two transmon system
• Implementation of controlled-NOT quantum gate by nonlinear coupled electro-nano-optomechanical oscillators
• Filter Function Formalism and Software Package to Compute Quantum Processes of Gate Sequences for Classical Non-Markovian Noise
• Circuit QED: Generation of two-transmon-qutrit entangled states via resonant interaction
• Effects of the thin-film thickness on superconducting NbTi microwave resonators for on-chip cryogenic thermometry
• Fault-tolerant fidelity based on few-qubit codes: Parity-check circuits for biased error channels
• Rényi entropy of the permutationally invariant part of the ground state across a quantum phase transition
• Review of Superconducting Qubit Devices and Their Large-Scale Integration
• A switching approach for perfect state transfer over a scalable and routing enabled network architecture with superconducting qubits
• Certification of spin-based quantum simulators
• Hierarchical Quantum Error Correction with Hypergraph Product Code and Rotated Surface Code
• Quantum information density scaling and qubit operation time constraints of CMOS silicon based quantum computer architectures
• A digital quantum simulator in the presence of a bath
• Special-Purpose Quantum Processor Design
• Passive leakage removal unit based on a disordered transmon array
• Resonant Coupling Parameter Estimation with Superconducting Qubits
• Enhanced Cavity Optomechanics with Quantum-well Exciton Polaritons
• Two-photon exchange interaction from Dicke Hamiltonian under parametric modulation
• Long-distance coupling of spin qubits via topological magnons
• Fault-tolerant Quantum Error Correction Using a Linear Array of Emitters
• From Independent to Joint: Enhancing Quantum Phase and Correlation Factor Estimation by Squeezed Reservoir Engineering