Reducing unitary and spectator errors in cross resonance with optimized rotary echoes
arXiv:2007.02925 · doi:10.1103/PRXQuantum.1.020318
Abstract
We present an improvement to the cross resonance gate realized with the addition of resonant, target rotary pulses. These pulses, applied directly to the target qubit, are simultaneous to and in phase with the echoed cross resonance pulses. Using specialized Hamiltonian error amplifying tomography, we confirm a reduction of error terms with target rotary -- directly translating to improved two-qubit gate fidelity. Beyond improvement in the control-target subspace, the target rotary reduces entanglement between target and target spectators caused by residual quantum interactions. We further characterize multi-qubit performance improvement enabled by target rotary pulsing using unitarity benchmarking and quantum volume measurements, achieving a new record quantum volume for a superconducting qubit system.
References in corpus (27)
- Hardware-efficient Variational Quantum Eigensolver for Small Molecules and Quantum Magnets
- Supervised learning with quantum enhanced feature spaces
- Logic gates at the surface code threshold: Superconducting qubits poised for fault-tolerant quantum computing
- Demonstration of Two-Qubit Algorithms with a Superconducting Quantum Processor
- Randomized Benchmarking of Quantum Gates
- Robust randomized benchmarking of quantum processes
- Validating quantum computers using randomized model circuits
- Probing entanglement entropy via randomized measurements
- Procedure for systematically tuning up crosstalk in the cross resonance gate
- A simple all-microwave entangling gate for fixed-frequency superconducting qubits
- Quantum chemistry calculations on a trapped-ion quantum simulator
- A universal gate for fixed-frequency qubits via a tunable bus
- Entanglement of Quantum Evolutions
- Detecting bit-flip errors in a logical qubit using stabilizer measurements
- Quantum Process Tomography of a Universal Entangling Gate Implemented with Josephson Phase Qubits
- Experimental demonstration of fault-tolerant state preparation with superconducting qubits
- Process verification of two-qubit quantum gates by randomized benchmarking
- Effective Hamiltonian models of the cross-resonance gate
- Demonstration of weight-four parity measurements in the surface code architecture
- Estimating the Coherence of Noise
- Microwave-induced coupling of superconducting qubits
- Three Qubit Randomized Benchmarking
- Experimental demonstration of a resonator-induced phase gate in a multi-qubit circuit QED system
- Verifying Multipartite Entangled GHZ States via Multiple Quantum Coherences
- Operation and intrinsic error budget of a two-qubit cross-resonance gate
- Quantum entanglement of unitary operators on bi-partite systems
- Estimating the coherence of noise in quantum control of a solid-state qubit
Cited by in corpus (102)
- OpenQASM 3: A broader and deeper quantum assembly language
- Laser-annealing Josephson junctions for yielding scaled-up superconducting quantum processors
- Scalable error mitigation for noisy quantum circuits produces competitive expectation values
- Demonstration of a High-Fidelity CNOT for Fixed-Frequency Transmons with Engineered ZZ Suppression
- Suppression of crosstalk in superconducting qubits using dynamical decoupling
- Quantum crosstalk analysis for simultaneous gate operations on superconducting qubits
- Experimental high-dimensional Greenberger-Horne-Zeilinger entanglement with superconducting transmon qutrits
- Matching and maximum likelihood decoding of a multi-round subsystem quantum error correction experiment
- Scalable High-Performance Fluxonium Quantum Processor
- Transmon platform for quantum computing challenged by chaotic fluctuations
- Pulse-efficient circuit transpilation for quantum applications on cross-resonance-based hardware
- Quantum crosstalk cancellation for fast entangling gates and improved multi-qubit performance
- Calibrated decoders for experimental quantum error correction
- Hardware-Efficient Microwave-Activated Tunable Coupling Between Superconducting Qubits
- A Modular Quantum Compilation Framework for Distributed Quantum Computing
- Learning many-body Hamiltonians with Heisenberg-limited scaling
- Universal fidelity reduction of quantum operations from weak dissipation
- Fast logic with slow qubits: microwave-activated controlled-Z gate on low-frequency fluxoniums
- Universal qudit gate synthesis for transmons
- Quantum Volume in Practice: What Users Can Expect from NISQ Devices
- Simulating the dynamics of braiding of Majorana zero modes using an IBM quantum computer
- Analyzing the Performance of Variational Quantum Factoring on a Superconducting Quantum Processor
- Re-examining the quantum volume test: Ideal distributions, compiler optimizations, confidence intervals, and scalable resource estimations
- Error-Mitigated Simulation of Quantum Many-Body Scars on Quantum Computers with Pulse-Level Control
- Demonstration of quantum volume 64 on a superconducting quantum computing system
- Scalable Method for Eliminating Residual Interaction between Superconducting Qubits
- Suppression of static ZZ interaction in an all-transmon quantum processor
- Optimizing frequency allocation for fixed-frequency superconducting quantum processors
- Experimental benchmarking of an automated deterministic error suppression workflow for quantum algorithms
- Perturbation impact of spectators on a cross-resonance gate in a tunable coupling superconducting circuit
- Mitigating off-resonant error in the cross-resonance gate
- Pulse variational quantum eigensolver on cross-resonance based hardware
- Well-conditioned multi-product formulas for hardware-friendly Hamiltonian simulation
- Realizing the Nishimori transition across the error threshold for constant-depth quantum circuits
- Minimum quantum run-time characterization and calibration via restless measurements with dynamic repetition rates
- Quantum advantage for computations with limited space
- ZZ freedom in two qubit gates
- Experimental implementation of non-Clifford interleaved randomized benchmarking with a controlled-S gate
- Practical Black Box Hamiltonian Learning
- Native two-qubit gates in fixed-coupling, fixed-frequency transmons beyond cross-resonance interaction
- Cross cross resonance gate
- Proposal for entangling gates on fluxonium qubits via a two-photon transition
- Digital-Analog Quantum Simulations Using The Cross-Resonance Effect
- Distinguishing between quantum and classical Markovian dephasing dissipation
- Evaluation of Parameterized Quantum Circuits with Cross-Resonance Pulse-Driven Entanglers
- Quantum Circuit Engineering for Correcting Coherent Noise
- Characterization of entanglement on superconducting quantum computers of up to 414 qubits
- Pulse-efficient quantum machine learning
- Shallow unitary decompositions of quantum Fredkin and Toffoli gates for connectivity-aware equivalent circuit averaging
- Characterizing non-Markovian Off-Resonant Errors in Quantum Gates
- CNOT gates for fluxonium qubits via selective darkening of transitions
- Experimental error suppression in Cross-Resonance gates via multi-derivative pulse shaping
- Optimization of the resonator-induced phase gate for superconducting qubits
- Squeezing and quantum approximate optimization
- Pulse-engineered Controlled-V gate and its applications on superconducting quantum device
- Suppressing Correlated Noise in Quantum Computers via Context-Aware Compiling
- Decoherence predictions in a superconductive quantum device using the steepest-entropy-ascent quantum thermodynamics framework
- Robust photon-mediated entangling gates between quantum dot spin qubits
- Reinforcement learning pulses for transmon qubit entangling gates
- Hardware-Conscious Optimization of the Quantum Toffoli Gate
- Active Learning of Quantum System Hamiltonians yields Query Advantage
- Direct calculation of the ZZ-interaction rates in the multi-mode circuit-QED
- Fast Flux Entangling Gate for Fluxonium Circuits
- A Toffoli Gate Decomposition via Echoed Cross-Resonance Gates
- Exploiting dynamic quantum circuits in a quantum algorithm with superconducting qubits
- Optimal realization of Yang-Baxter gate on quantum computers
- Characterizing Coherent Errors using Matrix-Element Amplification
- Simulating spectroscopy experiments with a superconducting quantum computer
- Quantum-Computer-Based Verification of Quantum Thermodynamic Uncertainty Relation
- High-performance multiqubit system with double-transmon couplers: Toward scalable superconducting quantum computers
- Suppressed crosstalk between two-junction superconducting qubits with mode-selective exchange coupling
- Testing complementarity on a transmon quantum processor
- Dynamical uncertainty propagation with noisy quantum parameters
- Remote Cross-resonance Gate between Superconducting Fixed-frequency Qubits
- QContext: Context-Aware Decomposition for Quantum Gates
- Floquet Analysis of Frequency Collisions
- Estimation of correlations and non-separability in quantum channels via unitarity benchmarking
- Fast ZZ-Free Entangling Gates for Superconducting Qubits Assisted by a Driven Resonator
- Lattice Hamiltonians and Stray Interactions Within Quantum Processors
- Resource-efficient context-aware dynamical decoupling embedding for arbitrary large-scale quantum algorithms
- Quantum optimal control in quantum technologies. Strategic report on current status, visions and goals for research in Europe
- Robust gates with spin-locked superconducting qubits
- Minimal Time Robust Control for Two Superconducting Qubits
- Scalable protocol to mitigate crosstalk in universal quantum gates
- Characterization of coherent errors in gate layers with robustness to Pauli noise
- Effectiveness of the syndrome extraction circuit with flag qubits on IBM quantum hardware
- Fast microwave-driven two-qubit gates between fluxonium qubits with a transmon coupler
- Correcting noisy quantum gates with shortcuts to adiabaticity
- Readout Error Mitigation for Mid-Circuit Measurements and Feedforward
- Variational Quantum Gate Optimization at the Pulse Level
- Higher-order protection of quantum gates: Hamiltonian engineering coordinated with dynamical decoupling
- Achieving computational gains with quantum error-correction primitives: Generation of long-range entanglement enhanced by error detection
- Transversal CNOT gate with multi-cycle error correction
- Characterisation of spatial charge sensitivity in a multi-mode superconducting qubit
- Crosstalk-Based Parameterized Quantum Circuit Approximation
- Characteristics, Implementation and Applications of Special Perfect Entangler Circuits
- Microwave-activated high-fidelity three-qubit gate scheme for fixed-frequency superconducting qubits
- Sparse Non-Markovian Noise Modeling of Transmon-Based Multi-Qubit Operations
- Review of Superconducting Qubit Devices and Their Large-Scale Integration
- Robust Error Accumulation Suppression for Quantum Circuits
- Hardware-efficient random circuits to classify noise in a multi-qubit system
- Benchmarking quantum devices beyond classical capabilities