Qubit architecture with high coherence and fast tunable coupling

Abstract

We introduce a superconducting qubit architecture that combines high-coherence qubits and tunable qubit-qubit coupling. With the ability to set the coupling to zero, we demonstrate that this architecture is protected from the frequency crowding problems that arise from fixed coupling. More importantly, the coupling can be tuned dynamically with nanosecond resolution, making this architecture a versatile platform with applications ranging from quantum logic gates to quantum simulation. We illustrate the advantages of dynamic coupling by implementing a novel adiabatic controlled-Z gate, at a speed approaching that of single-qubit gates. Integrating coherence and scalable control, our "gmon" architecture is a promising path towards large-scale quantum computation and simulation.

References in corpus (10)

• Charge insensitive qubit design derived from the Cooper pair box
• Logic gates at the surface code threshold: Superconducting qubits poised for fault-tolerant quantum computing
• Randomized Benchmarking of Quantum Gates
• Superconducting Circuits and Quantum Information
• Observation of topological transitions in interacting quantum circuits
• Fast adiabatic qubit gates using only ${\sigma }_z$ control
• Controllable coupling of superconducting flux qubits
• Tunable coupling in circuit quantum electrodynamics with a superconducting V-system
• High-fidelity gates in a Josephson qubit
• Many-Body Interactions with Tunable-Coupling Transmon Qubits

Cited by in corpus (360)

• Supplementary information for "Quantum supremacy using a programmable superconducting processor"
• Circuit Quantum Electrodynamics
• A Quantum Engineer's Guide to Superconducting Qubits
• Superconducting Qubits: Current State of Play
• Microwave photonics with superconducting quantum circuits
• Ultrastrong coupling regimes of light-matter interaction
• Quantum information processing with superconducting circuits: a review
• Toward the first quantum simulation with quantum speedup
• New material platform for superconducting transmon qubits with coherence times exceeding 0.3 milliseconds
• Chiral groundstate currents of interacting photons in a synthetic magnetic field
• Procedure for systematically tuning up crosstalk in the cross resonance gate
• Spectral signatures of many-body localization with interacting photons
• Quantum control of surface acoustic wave phonons
• A tunable coupling scheme for implementing high-fidelity two-qubit gates
• Engineering cryogenic setups for 100-qubit scale superconducting circuit systems
• Superconducting Quantum Computing: A Review
• Quantum Error Correction: An Introductory Guide
• Realization of an Error-Correcting Surface Code with Superconducting Qubits
• Phonon-mediated quantum state transfer and remote qubit entanglement
• Ergodic dynamics and thermalization in an isolated quantum system
• Demonstrating a Continuous Set of Two-qubit Gates for Near-term Quantum Algorithms
• A universal gate for fixed-frequency qubits via a tunable bus
• Building a fault-tolerant quantum computer using concatenated cat codes
• Realization of high-fidelity CZ and ZZ-free iSWAP gates with a tunable coupler
• Superconducting Gatemon Qubit based on a Proximitized Two-Dimensional Electron Gas
• Quantum Simulation with Interacting Photons
• Observation of topological transitions in interacting quantum circuits
• Deterministic multi-qubit entanglement in a quantum network
• High-fidelity, high-scalability two-qubit gate scheme for superconducting qubits
• Quantum electrodynamics in a topological waveguide
• Topological and subsystem codes on low-degree graphs with flag qubits
• Gradient optimization of analytic controls: the route to high accuracy quantum optimal control
• Demonstration of a High-Fidelity CNOT for Fixed-Frequency Transmons with Engineered ZZ Suppression
• Robust quantum state transfer via topological edge states in superconducting qubit chains
• Enhancing cavity QED via anti-squeezing: synthetic ultra-strong coupling
• Measurement of many-body chaos using a quantum clock
• Implementation of Conditional-Phase Gates based on tunable ZZ-Interactions
• Random access quantum information processors
• Benchmarking Gate Fidelities in a Si/SiGe Two-Qubit Device
• Gate-efficient simulation of molecular eigenstates on a quantum computer
• Universal stabilization of a parametrically coupled qubit
• Superconducting metamaterials for waveguide quantum electrodynamics
• Characterization and Reduction of Capacitive Loss Induced by Sub-Micron Josephson Junction Fabrication in Superconducting Qubits
• Noisy intermediate-scale quantum computers
• High-Fidelity Single-Shot Toffoli Gate via Quantum Control
• Tuneable hopping and nonlinear cross-Kerr interactions in a high-coherence superconducting circuit
• Tutorial: Gate-based superconducting quantum computing
• Bounding quantum gate error rate based on reported average fidelity
• High-fidelity controlled-Z gate with maximal intermediate leakage operating at the speed limit in a superconducting quantum processor
• Quantum crosstalk analysis for simultaneous gate operations on superconducting qubits
• Many-Body Quantum Electrodynamics Networks: Non-Equilibrium Condensed Matter Physics with Light
• Tunable coupler for realizing a controlled-phase gate with dynamically decoupled regime in a superconducting circuit
• Low-loss interconnects for modular superconducting quantum processors
• Operation and intrinsic error budget of a two-qubit cross-resonance gate
• Violating Bell's inequality with remotely-connected superconducting qubits
• Coherent coupled qubits for quantum annealing
• A NASA Perspective on Quantum Computing: Opportunities and Challenges
• Early Fault-Tolerant Quantum Computing
• Solving Systems of Linear Equations with a Superconducting Quantum Processor
• Coherent transfer of quantum information in silicon using resonant SWAP gates
• High-contrast ZZ interaction using superconducting qubits with opposite-sign anharmonicity
• Ultrastrong coupling in two-resonator circuit QED
• Developing a platform for linear mechanical quantum computing
• Gatemon Benchmarking and Two-Qubit Operation
• Fermion-Fermion Scattering in Quantum Field Theory with Superconducting Circuits
• Scalable High-Performance Fluxonium Quantum Processor
• Parametric-resonance entangling gates with a tunable coupler
• Quantum bits with Josephson junctions
• Coherent control of quantum topological states of light in Fock-state lattices
• Qubit-photon bound states in topological waveguides with long-range hoppings
• Quantum crosstalk cancellation for fast entangling gates and improved multi-qubit performance
• 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
• Robust manipulation of superconducting qubits in the presence of fluctuations
• Benchmarking the noise sensitivity of different parametric two-qubit gates in a single superconducting quantum computing platform
• Charting the circuit QED design landscape using optimal control theory
• A Unidirectional On-Chip Photonic Interface for Superconducting Circuits
• Quantum gate learning in engineered qubit networks: Toffoli gate with always-on interactions
• Floating tunable coupler for scalable quantum computing architectures
• Benchmarking Coherent Errors in Controlled-Phase Gates due to Spectator Qubits
• Flexible superconducting Nb transmission lines on thin film polyimide for quantum computing applications
• NISQ Computers: A Path to Quantum Supremacy
• Long-distance transmon coupler with CZ gate fidelity above $99.8\%$
• Single-photon scattering in a giant-molecule waveguide-QED system
• Error analysis in suppression of unwanted qubit interactions for a parametric gate in a tunable superconducting circuit
• Entanglement purification and protection in a superconducting quantum network
• Accurately computing electronic properties of a quantum ring
• Tunable and Switchable Coupling Between Two Superconducting Resonators
• Systematic Crosstalk Mitigation for Superconducting Qubits via Frequency-Aware Compilation
• Probing many-body localization phase transition with superconducting circuits
• Chiral and nonreciprocal single-photon scattering in a chiral-giant-molecule waveguide-QED system
• Engineering Dynamical Sweet Spots to Protect Qubits from 1/$f$ Noise
• Realization of efficient quantum gates with a superconducting qubit-qutrit circuit
• Quantum communication with itinerant surface acoustic wave phonons
• Remote entanglement via adiabatic passage using a tunably-dissipative quantum communication system
• Continuous wave single photon transistor based on a superconducting circuit
• Low Loss Multi-Layer Wiring for Superconducting Microwave Devices
• Partial Compilation of Variational Algorithms for Noisy Intermediate-Scale Quantum Machines
• Optimal Control for the Quantum Simulation of Nuclear Dynamics
• Quantum erasure using entangled surface acoustic phonons
• High-fidelity software-defined quantum logic on a superconducting qudit
• Simulation and Detection of Photonic Chern Insulators in One-Dimensional Circuit Quantum Electrodynamics Lattice
• A decoherence-free subspace in a charge quadrupole qubit
• Microwave Boson Sampling
• Programmable directional emitter and receiver of itinerant microwave photons in a waveguide
• Demonstration of an All-Microwave Controlled-Phase Gate between Far Detuned Qubits
• Entangling superconducting qubits in a multi-cavity system
• On-Chip Josephson Junction Microwave Switch
• Boundaries of quantum supremacy via random circuit sampling
• Breaking Adiabatic Quantum Control with Deep Learning
• Voltage-Controlled Superconducting Quantum Bus
• Kinetic Inductance Traveling Wave Amplifiers For Multiplexed Qubit Readout
• Dynamical phase transitions in sampling complexity
• Quantum Computing: An Overview Across the System Stack
• Overlap junctions for high coherence superconducting qubits
• Observation of the Crossover from Photon Ordering to Delocalization in Tunably Coupled Resonators
• A fluxonium-based artificial molecule with a tunable magnetic moment
• Finite-time quantum Stirling heat engine
• Dissipative Topological Phase Transition with Strong System-Environment Coupling
• Floquet quantum simulation with superconducting qubits
• Experimental realization of a fast controlled-Z gate via a shortcut-to-adiabaticity
• Suppression of static ZZ interaction in an all-transmon quantum processor
• Synthesis of parametrically-coupled networks
• A leakage-resilient approach to fault-tolerant quantum computing with superconducting elements
• Stroboscopic Symmetry-Protected Topological Phases
• Coupler-Assisted Controlled-Phase Gate with Enhanced Adiabaticity
• Creation of quantum error correcting codes in the ultrastrong coupling regime
• Witnessing topological Weyl semimetal phase in a minimal circuit-QED lattice
• Symmetry criteria for quantum simulability of effective interactions
• Dynamical Lamb Effect in a Tunable Superconducting Qubit-Cavity System
• Optimal control of superconducting gmon qubits using Pontryagin's minimum principle: preparing a maximally entangled state with singular bang-bang protocols
• Quantum Error-Correction-Enhanced Magnetometer Overcoming the Limit Imposed by Relaxation
• Nonreciprocal Signal Routing in an Active Quantum Network
• Topological two-dimensional Floquet lattice on a single superconducting qubit
• Error-transparent quantum gates for small logical qubit architectures
• Double-Transmon Coupler: Fast Two-Qubit Gate with No Residual Coupling for Highly Detuned Superconducting Qubits
• Microwave-Activated Controlled-Z Gate for Fixed-Frequency Fluxonium Qubits
• Perturbation impact of spectators on a cross-resonance gate in a tunable coupling superconducting circuit
• Full two-photon downconversion of just a single photon
• Engineering dissipation with resistive elements in circuit quantum electrodynamics
• Chiral quantum optics in photonic sawtooth lattices
• Heralded generation of maximal entanglement in any dimension via incoherent coupling to thermal baths
• Tunable inductive coupling of superconducting qubits in the strongly nonlinear regime
• Deterministic quantum teleportation between distant superconducting chips
• Semiconductor-inspired design principles for superconducting quantum computing
• One-photon Solutions to Multiqubit Multimode quantum Rabi model
• Large-scale GHZ states through topologically protected zero-energy mode in a superconducting qutrit-resonator chain
• Arbitrary entangled state transfer via a topological qubit chain
• Long-range connectivity in a superconducting quantum processor using a ring resonator
• Perfect wave-packet splitting and reconstruction in a one-dimensional lattice
• Mitigating off-resonant error in the cross-resonance gate
• Universal fluctuations and squeezing in generalized Dicke model near the superradiant phase transition
• Detecting Topological Phases of Microwave Photons in a Circuit Quantum Electrodynamics Lattice
• Superconducting resonators with voltage-controlled frequency and nonlinearity
• Accelerating adiabatic protocols for entangling two qubits in circuit QED
• Stabilizing two-qubit entanglement by mimicking a squeezed environment
• An adaptive algorithm for quantum circuit simulation
• Charge and statistics of lattice quasiholes from density measurements: a Tree Tensor Network study
• Universal controlled-phase gate with cat-state qubits in circuit QED
• Modular tunable coupler for superconducting qubits
• Magnetic-field resilience of 3D transmons with thin-film Al/AlO${}_x$/Al Josephson junctions approaching 1 T
• Realization of high-fidelity CZ gates in extensible superconducting qubits design with a tunable coupler
• Superconducting grid-bus surface code architecture for hole-spin qubits
• Variational waveguide QED simulators
• Robust quantum state transfer using tunable couplers
• Scalable and robust quantum computing on qubit arrays with fixed coupling
• Bandgap-Assisted Quantum Control of Topological Edge States in a Cavity
• Realizing quantum optics in structured environments with giant atoms
• Fast high-fidelity gates for galvanically-coupled fluxonium qubits using strong flux modulation
• Implementing a synthetic magnetic vector potential in a 2D superconducting qubit array
• Universal two-qubit interactions, measurement and cooling for quantum simulation and computing
• Generating double NOON states of photons in circuit QED
• Quantum Origami: Transversal Gates for Quantum Computation and Measurement of Topological Order
• Controlled-Controlled-Phase Gates for Superconducting Qubits Mediated by a Shared Tunable Coupler
• Switchable next-nearest-neighbor coupling for controlled two-qubit operations
• Quantum State Discrimination Using Noisy Quantum Neural Networks
• Single Shot i-Toffoli Gate in Dispersively Coupled Superconducting Qubits
• Violation of Bell's Inequality in Electromechanics
• Improving autonomous thermal entanglement generation using a common reservoir
• Entangling transmons with low-frequency protected superconducting qubits
• Quantum phase transition in a multi-connected superconducting Jaynes-Cummings lattice
• Proposal for entangling gates on fluxonium qubits via a two-photon transition
• Crosstalk-insensitive method for simultaneously coupling multiple pairs of resonators
• Noisy Qudit vs Multiple Qubits : Conditions on Gate Efficiency for Enhancing Fidelity
• Fast and Robust Geometric Two-Qubit Gates for Superconducting Qubits and beyond
• Controlled DC Monitoring of a Superconducting Qubit
• A cryogenic on-chip microwave pulse generator for large-scale superconducting quantum computing
• Decomposition of bipartite and multipartite unitary gates into the product of controlled unitary gates
• Equivalence Checking of Sequential Quantum Circuits
• Dispersion Suppressed Topological Thouless Pumping
• The scattering coefficients of superconducting microwave resonators: I. Transfer-matrix approach
• Coherent Feedback Improved Qubit Initialization in the Dispersive Regime
• Ultrastrong tunable coupler between superconducting LC resonators
• Topology-dependent quantum dynamics and entanglement-dependent topological pumping in superconducting qubit chains
• Strong parametric dispersive shifts in a statically decoupled multi-qubit cavity QED system
• Circuit QED: single-step realization of a multiqubit controlled phase gate with one microwave photonic qubit simultaneously controlling $n-1$ microwave photonic qubits
• Nonlinearity and Parametric Amplification of Superconducting Nanowire Resonators in Magnetic Field
• Simple implementation of high fidelity controlled-$i$SWAP gates and quantum circuit exponentiation of non-Hermitian gates
• High-fidelity and long-distance entangled-state transfer with Floquet topological edge modes
• Bidirectional multi-photon communication between remote superconducting nodes
• Entanglement-enhanced quantum rectification
• Simulating nonnative cubic interactions on noisy quantum machines
• Enhanced Quantum Synchronization via Quantum Machine Learning
• Quantum chemistry and charge transport in biomolecules with superconducting circuits
• Fast flux control of 3D transmon qubits using a magnetic hose
• Controllable high-fidelity quantum state transfer and entanglement generation in circuit QED
• Tunable coupling of widely separated superconducting qubits: A possible application towards a modular quantum device
• Optimization of the resonator-induced phase gate for superconducting qubits
• Efficient transfer of an arbitrary qutrit state in circuit QED
• Qurzon: A Prototype for a Divide and Conquer Based Quantum Compiler
• Hardware-efficient fermionic simulation with a cavity-QED system
• Controlled-Z gate for transmon qubits coupled by semiconductor junctions
• Realisation of adiabatic and diabatic CZ gates in superconducting qubits coupled with a tunable coupler
• Single-photon switch controlled by a qubit embedded in an engineered electromagnetic environment
• Superconducting circuit simulator of Bose-Hubbard model with a flat band
• Tunable Coupling Architectures with Capacitively Connecting Pads for Large-Scale Superconducting Multi-Qubit Processors
• Staggered quantum walks with superconducting microwave resonators
• Deterministic generations of NOON states via shortcuts to adiabaticity
• Classical Chaos in Quantum Computers
• Quantum State Synthesis of Superconducting Resonators
• An efficient protocol of quantum walk in circuit QED
• Purification of an unpolarized spin ensemble into entangled singlet pairs
• Quantum power boost in a nonstationary cavity-QED quantum heat engine
• Invariant-based inverse engineering of time-dependent, coupled harmonic oscillators
• Dynamical blockade in a bosonic Josephson junction using optimal coupling
• Realization of fast all-microwave CZ gates with a tunable coupler
• Long-Range $ZZ$ Interaction via Resonator-Induced Phase in Superconducting Qubits
• Quantum interference device for controlled two-qubit operations
• Accelerating Quantum Relaxation via Temporary Reset: A Mpemba-Inspired Approach
• Transferring arbitrary d-dimensional quantum states of a superconducting qudit in circuit QED
• Optimizing edge state transfer in a Su-Schrieffer-Heeger chain via hybrid analog-digital strategies
• Superconducting coupler with exponentially large on-off ratio
• Quantum information scrambling in the presence of weak and strong thermalization
• Topological photonics on superconducting quantum circuits with parametric couplings
• Control of the $ZZ$ coupling between Kerr-cat qubits via transmon couplers
• Fast parametric two-qubit gate for highly detuned fixed-frequency superconducting qubits using a double-transmon coupler
• Tuneable and weakly-invasive probing of a superconducting resonator based onelectromagnetically induced transparency
• Binary Control Pulse Optimization for Quantum Systems
• Direct calculation of the ZZ-interaction rates in the multi-mode circuit-QED
• Resonant and off-resonant microwave signal manipulation in coupled superconducting resonators
• A controllable two-qubit swapping gate using superconducting circuits
• Universal stabilization of single-qubit states using a tunable coupler
• Site-wise manipulations and Mott insulator-superfluid transition of interacting photons using superconducting circuit simulators
• Microwave-based Arbitrary CPHASE Gates for Transmon Qubits
• Analytical comparison of the first- and second-order resonances for implementation of the dynamical Casimir effect in nonstationary circuit QED
• Many-body strategies for multi-qubit gates - quantum control through Krawtchouk chain dynamics
• Single-step transfer or exchange of multipartite quantum entanglement with minimum resources
• Quantum phase transition in a multiconnected Jaynes-Cummings lattice
• Superadiabatic Control of Quantum Operations
• Lecture Notes on Quantum Electrical Circuits
• Synthetic ${\mathbb{Z}}_2$ gauge theories based on parametric excitations of trapped ions
• Parametrically controlled chiral interface for superconducting quantum devices
• Non-perturbative analytical diagonalization of Hamiltonians with application to coupling suppression and enhancement in cQED
• Exploring the Limits of Controlled Markovian Quantum Dynamics with Thermal Resources
• Inverted many-body mobility edge in a central qudit problem
• Control the qubit-qubit coupling in the superconducting circuit with double-resonator couplers
• Anti-Dynamical Casimir Effect as a Resource for Work Extraction
• Efficient decoupling of a non-linear qubit mode from its environment
• Universal quantum state preparation via revised greedy algorithm
• Quarter-wave Resonator Based Tunable Coupler for Xmon Qubits
• Tunable coupling of a quantum phononic resonator to a transmon qubit with flip-chip architecture
• Mitigating Errors on Superconducting Quantum Processors through Fuzzy Clustering
• Improved Quantum State Tomography for the Systems with XX+YY Couplings and Z Readouts
• Efficient Hamiltonian programming in qubit arrays with nearest-neighbour couplings
• High-performance multiqubit system with double-transmon couplers: Toward scalable superconducting quantum computers
• Time evolution of the quantum entanglement between $N$ qubits due to dynamical Lamb effect in the presence of dissipation
• Non-perturbative Floquet engineering of the toric-code Hamiltonian and its ground state
• Accelerating multipartite entanglement generation in non-Hermitian superconducting qubits
• Remote Cross-resonance Gate between Superconducting Fixed-frequency Qubits
• Constructive plaquette compilation for the parity architecture
• Emerging unitary evolutions in dissipatively coupled systems
• Reachability in Infinite Dimensional Unital Open Quantum Systems with Switchable GKS-Lindblad Generators
• Magnon-mediated quantum gates for superconducting qubits
• Harnessing spontaneous emission of correlated photon pairs from ladder-type giant atoms
• 1- and 3-photon dynamical Casimir effects using nonstationary cyclic qutrit
• Emulating quantum state transfer through a spin-1 chain on a 1D lattice of superconducting qutrits
• Floquet engineering flat bands for bosonic fractional quantum Hall in small lattices
• Perfect state transfer on hypercubes and its implementation using superconducting qubits
• Quantum random access memory with transmon-controlled phonon routing
• Intermittent decoherence blockade in a chiral ring environment
• Determination of Molecular Energies via Quantum Imaginary Time Evolution in a Superconducting Qubit System
• Superconducting flip-chip devices using indium microspheres on Au-passivated Nb or NbN as under-bump metallization layer
• Quantum State Transfer via a Multimode Resonator
• Emergent photon pair propagation in circuit QED with superconducting processors
• Ultrawide-range photon number calibration using a hybrid system combining nano-electromechanics and superconducting circuit quantum electrodynamics
• Quantum optimal control in quantum technologies. Strategic report on current status, visions and goals for research in Europe
• The superconducting circuit companion -- an introduction with worked examples
• Simulation of Kitaev model using one-dimensional chain of superconducting qubits and environmental effect on topological states
• A thermal-noise-resilient microwave quantum network traversing 4 K
• Fluctuations and photon statistics in quantum metamaterial near the superradiant transition
• Superconducting-semiconducting voltage-tunable qubits in the third dimension
• State Preparation in a Jaynes-Cummings Lattice with Quantum Optimal Control
• Flexible constraint compilation in the parity architecture
• Reachable Sets from Toy Models to Controlled Markovian Quantum Systems
• Hybrid noise protection of logical qubits for universal quantum computation
• Heralding entangled optical photons from a microwave quantum processor
• Deterministic Bidirectional Communication and Remote Entanglement Generation Between Superconducting Quantum Processors
• Comparing planar quantum computing platforms at the quantum speed limit
• Emergence of chaos and controlled photon transfer in a cavity-QED network
• Surface code fidelity at finite temperatures
• Controlling nonergodicity in quantum many-body systems by reinforcement learning
• Bringing Quantum Systems under Control: A Tutorial Invitation to Quantum Computing and Its Relation to Bilinear Control Systems
• Mott insulator-superfluid phase transition in a detuned multi-connected Jaynes-Cummings lattice
• Optimizing for periodicity: a model-independent approach to flux crosstalk calibration for superconducting circuits
• Switching Time Optimization for Binary Quantum Optimal Control
• Controlling Nonequilibrium Bose-Einstein Condensation with Engineered Environments
• Chiral excitation flows of a multinode network based on synthetic gauge fields
• Quantum Shortcut to Adiabaticity for State Preparation in a Finite-Sized Jaynes-Cummings Lattice
• Two-dimensional topological effect in a transmon qubit array with tunable couplings
• Quantum Optimal Control Theory for the Shaping of Flying Qubits
• Qubit Energy Tuner Based on Single Flux Quantum Circuits
• Simon's algorithm in the NISQ cloud
• Deterministic transfer of an unknown qutrit state assisted by the low-Q microwave resonators
• Low crosstalk modular flip-chip architecture for coupled superconducting qubits
• Quantum phase transitions in a Dicke trimer with both photon and atom hoppings
• Quantum Features of the Thermal Two-Qubit Quantum Rabi Model in Ultra- and Deep-Strong Regimes
• Signatures of topological quantum phase transitions in driven and dissipative qubit-arrays
• Towards Efficient Superconducting Quantum Processor Architecture Design
• Distortion of a reduced equilibrium density matrix: influence on quantum emulation
• Realizing universal quantum gates with topological bases in quantum-simulated superconducting chains
• Can the dynamical Lamb effect be observed in a superconducting circuit?
• A practical guide for building superconducting quantum devices
• Boosting on the shoulders of giants in quantum device calibration
• Protected ground states in short chains of coupled spins in circuit quantum electrodynamics
• Tuning and Amplifying the Interactions in Superconducting Quantum Circuits with Subradiant Qubits
• Control over few photon pulses by a time-periodic modulation of the photon-emitter coupling
• Two-photon coupling via Josephson element I: Breaking the symmetry with magnetic fields
• Residual-$ZZ$-coupling suppression and fast two-qubit gate for Kerr-cat qubits based on level-degeneracy engineering
• Reachability, Coolability, and Stabilizability of Open Markovian Quantum Systems with Fast Unitary Control
• In-situ tunable interaction with an invertible sign between a fluxonium and a post cavity
• Parametric phase modulation in superconducting circuits
• Binary Quantum Control Optimization with Uncertain Hamiltonians
• Robustness of a universal gate set implementation in transmon systems via Chopped Random Basis optimal control
• Mitigating Errors in Analog Quantum Simulation by Hamiltonian Reshaping or Hamiltonian Rescaling
• Partial randomized benchmarking
• Quantum correlation generation capability of experimental processes
• Tunable Hybrid-Mode Coupler Enabling Strong Interactions between Transmons at Centimeter-Scale Distance
• Overhead in Quantum Circuits with Time-Multiplexed Qubit Control
• Pulse-controlled quantum gate sequences on a strongly coupled qubit chain
• Generation of time-frequency entangled photon pairs propagating in separate waveguides in circuit QED setup
• Transmon-assisted high-fidelity controlled-Z gates for integer fluxonium qubits
• Fast non-Abelian geometric gates via transitionless quantum driving
• Optimizing the frequency positioning of tunable couplers in a circuit QED processor to mitigate spectator effects on quantum operations
• Flux-modulated tunable interaction regimes in two strongly nonlinear oscillators
• Supervised quantum gate "teaching" for quantum hardware design
• Hybrid quantum surface acoustic wave with skyrmion qubit for quantum information processing
• Topological and geometric patterns in optimal bang-bang protocols for variational quantum algorithms: application to the $XXZ$ model on the square lattice
• Harnessing subspace controllability: Dynamical generation of Dicke states in Heisenberg-coupled qubit arrays with a single local control
• A hybrid ferromagnetic transmon qubit: circuit design, feasibility and detection protocols for magnetic fluctuations
• Quantum Acoustics with Superconducting Qubits in the Multimode Transition-Coupling Regime
• Topological two-particle dynamics in a periodically driven lattice model with on-site interactions
• Nonreciprocal routing induced by chirality in an atom-dimer waveguide-QED system
• Review of Superconducting Qubit Devices and Their Large-Scale Integration
• Control the qubit-qubit coupling with double superconducting resonators
• Gigahertz-frequency Lamb wave resonator cavities on suspended lithium niobate for quantum acoustics
• Mapping Surface Code to Superconducting Quantum Processors
• A switching approach for perfect state transfer over a scalable and routing enabled network architecture with superconducting qubits
• Two-photon exchange interaction from Dicke Hamiltonian under parametric modulation
• Photonic quantum Hall effects