Parametrically Activated Entangling Gates Using Transmon Qubits

Abstract

We describe and implement a family of entangling gates activated by radio-frequency flux modulation applied to a tunable transmon that is statically coupled to a neighboring transmon. The effect of this modulation is the resonant exchange of photons directly between levels of the two-transmon system, obviating the need for mediating qubits or resonator modes and allowing for the full utilization of all qubits in a scalable architecture. The resonance condition is selective in both the frequency and amplitude of modulation and thus alleviates frequency crowding. We demonstrate the use of three such resonances to produce entangling gates that enable universal quantum computation: one iSWAP gate and two distinct controlled Z gates. We report interleaved randomized benchmarking results indicating gate error rates of 6% for the iSWAP (duration 135ns) and 9% for the controlled Z gates (durations 175 ns and 270 ns), limited largely by qubit coherence.

arXiv commentAs submitted. 7 pages, 6 figures

References in corpus (34)

• Elementary gates for quantum computation
• Charge insensitive qubit design derived from the Cooper pair box
• Manipulating the Quantum State of an Electrical Circuit
• Demonstration of Two-Qubit Algorithms with a Superconducting Quantum Processor
• State preservation by repetitive error detection in a superconducting quantum circuit
• Experimental Quantum State Tomography of Optical Fields and Ultrafast Statistical Sampling
• Decoherence in Josephson Qubits from Dielectric Loss
• Unknown Quantum States and Operations, a Bayesian View
• Quantum information processing with circuit quantum electrodynamics
• A simple formula for the average gate fidelity of a quantum dynamical operation
• Procedure for systematically tuning up crosstalk in the cross resonance gate
• A simple all-microwave entangling gate for fixed-frequency superconducting qubits
• Efficient measurement of quantum gate error by interleaved randomized benchmarking
• A universal gate for fixed-frequency qubits via a tunable bus
• Demonstration of Universal Parametric Entangling Gates on a Multi-Qubit Lattice
• Natural two-qubit gate for quantum computation using the XY interaction
• Using Sideband Transitions for Two-Qubit Operations in Superconducting Circuits
• First-order sideband transitions with flux-driven asymmetric transmon qubits
• Procedures for Converting among Lindblad, Kraus and Matrix Representations of Quantum Dynamical Semigroups
• Entanglement of two superconducting qubits in a waveguide cavity via monochromatic two-photon excitation
• Parametric coupling for superconducting qubits
• Randomized Benchmarking of Multi-Qubit Gates
• Protocol for universal gates in optimally biased superconducting qubits
• Tunable coupling scheme for flux qubits at the optimal point
• Quantum process tomography of two-qubit controlled-Z and controlled-NOT gates using superconducting phase qubits
• First-order sidebands in circuit QED using qubit frequency modulation
• Novel E-beam lithography technique for in-situ junction fabrication: the controlled undercut
• Analytical modeling of parametrically-modulated transmon qubits
• Interference of Quantum Channels
• Tomography via Correlation of Noisy Measurement Records
• Fast and High-Fidelity Entangling Gate through Parametrically Modulated Longitudinal Coupling
• Quantum logic gates for superconducting resonator qudits
• Implementation of pairwise longitudinal coupling in a three-qubit superconducting circuit
• High-fidelity quantum operations on superconducting qubits in the presence of noise

Cited by in corpus (109)

• Circuit Quantum Electrodynamics
• A Quantum Engineer's Guide to Superconducting Qubits
• Superconducting Qubits: Current State of Play
• Engineering cryogenic setups for 100-qubit scale superconducting circuit systems
• Superconducting Quantum Computing: A Review
• Demonstration of Universal Parametric Entangling Gates on a Multi-Qubit Lattice
• High-fidelity, high-scalability two-qubit gate scheme for superconducting qubits
• A fast, low-leakage, high-fidelity two-qubit gate for a programmable superconducting quantum computer
• Perfect quantum state transfer in a superconducting qubit chain with parametrically tunable couplings
• Implementation of Conditional-Phase Gates based on tunable ZZ-Interactions
• First-principles analysis of cross-resonance gate operation
• Compiling quantum circuits to realistic hardware architectures using temporal planners
• Experimental implementation of universal nonadiabatic geometric quantum gates in a superconducting circuit
• Noisy intermediate-scale quantum computers
• Tutorial: Gate-based superconducting quantum computing
• Quantum crosstalk analysis for simultaneous gate operations on superconducting qubits
• Tunable coupler for realizing a controlled-phase gate with dynamically decoupled regime in a superconducting circuit
• Implementation of the XY interaction family with calibration of a single pulse
• Analytical modeling of parametrically-modulated transmon qubits
• High-contrast ZZ interaction using superconducting qubits with opposite-sign anharmonicity
• Parametric-resonance entangling gates with a tunable coupler
• Nonadiabatic geometric quantum computation with parametrically tunable coupling
• Rapid and Unconditional Parametric Reset Protocol for Tunable Superconducting Qubits
• Improved success probability with greater circuit depth for the quantum approximate optimization algorithm
• Benchmarking the noise sensitivity of different parametric two-qubit gates in a single superconducting quantum computing platform
• Demonstration of a Parametrically-Activated Entangling Gate Protected from Flux Noise
• Benchmarking Coherent Errors in Controlled-Phase Gates due to Spectator Qubits
• Engineering bilinear mode coupling in circuit QED: Theory and experiment
• Systematic Crosstalk Mitigation for Superconducting Qubits via Frequency-Aware Compilation
• Methods for Measuring Magnetic Flux Crosstalk Between Tunable Transmons
• Leakage detection for a transmon-based surface code
• Fast parametric two-qubit gates with suppressed residual interaction using a parity-violated superconducting qubit
• Lifetime renormalization of driven weakly anharmonic superconducting qubits: II. The readout problem
• Demonstration of an All-Microwave Controlled-Phase Gate between Far Detuned Qubits
• Fast multi-qubit gates through simultaneous two-qubit gates
• Realization of Superadiabatic Two-qubit Gates Using Parametric Modulation in Superconducting Circuits
• Fast holonomic quantum computation on superconducting circuits with optimal control
• Lattice gauge fields via modulation in circuit QED: The bosonic Creutz ladder
• AC flux sweet spots in parametrically-modulated superconducting qubits
• Coupler-Assisted Controlled-Phase Gate with Enhanced Adiabaticity
• Bounding the average gate fidelity of composite channels using the unitarity
• Full-Stack, Real-System Quantum Computer Studies: Architectural Comparisons and Design Insights
• Resource-Efficient Quantum Computing by Breaking Abstractions
• Reinforcement learning-enhanced protocols for coherent population-transfer in three-level quantum systems
• Accurate methods for the analysis of strong-drive effects in parametric gates
• Long-range connectivity in a superconducting quantum processor using a ring resonator
• Entanglement assisted probe of the non-Markovian to Markovian transition in open quantum system dynamics
• Suppressing ZZ Crosstalk of Quantum Computers through Pulse and Scheduling Co-Optimization
• ZZ freedom in two qubit gates
• Modular tunable coupler for superconducting qubits
• Nonadiabatic geometric quantum computation with optimal control on superconducting circuits
• Quantum Kitchen Sinks: An algorithm for machine learning on near-term quantum computers
• Fast Flux-Activated Leakage Reduction for Superconducting Quantum Circuits
• High-Fidelity Control of Superconducting Qubits Using Direct Microwave Synthesis in Higher Nyquist Zones
• Fixed-Depth Two-Qubit Circuits and the Monodromy Polytope
• Nonlinearity and Parametric Amplification of Superconducting Nanowire Resonators in Magnetic Field
• Fast flux control of 3D transmon qubits using a magnetic hose
• Nonadiabatic geometric quantum gates that are insensitive to qubit-frequency drifts
• Coupler-Assisted Leakage Reduction for Scalable Quantum Error Correction with Superconducting Qubits
• Practical Verification of Quantum Properties in Quantum Approximate Optimization Runs
• High-fidelity geometric quantum gates with short paths on superconducting circuits
• Implementing two-qubit gates at the quantum speed limit
• Enhanced coherence in superconducting circuits via band engineering
• Realisation of adiabatic and diabatic CZ gates in superconducting qubits coupled with a tunable coupler
• Weakly Flux-Tunable Superconducting Qubit
• Quantum interference device for controlled two-qubit operations
• Optimization of Controlled-Z Gate with Data-Driven Gradient Ascent Pulse Engineering in a Superconducting Qubit System
• Impact of decoherence on the fidelity of quantum gates leaving the computational subspace
• Scalable nonadiabatic holonomic quantum computation on a superconducting qubit lattice
• Fast parametric two-qubit gate for highly detuned fixed-frequency superconducting qubits using a double-transmon coupler
• Sideband control of a multimode quantum bulk acoustic system
• Cross-verification of independent quantum devices
• Nonadiabatic Holonomic Quantum Computation via Path Optimization
• Universal Robust Geometric Quantum Control via Geometric Trajectory Correction
• Microwave-activated gates between a fluxonium and a transmon qubit
• Robust nonadiabatic geometric quantum computation by dynamical correction
• STIRAP-Inspired Robust Gates for a Superconducting Dual-Rail Qubit
• QContext: Context-Aware Decomposition for Quantum Gates
• Floquet Analysis of Frequency Collisions
• Collateral coupling between superconducting resonators: Fast and high fidelity generation of qudit-qudit entanglement
• Hardware-Efficient Quantum Random Access Memory Design with a Native Gate Set on Superconducting Platforms
• Efficient two-qutrit gates in superconducting circuits using parametric coupling
• Charge-parity switching effects and optimisation of transmon-qubit design parameters
• Simulating nonlinear optical processes on a superconducting quantum device
• Selective acoustic control of photon-mediated qubit-qubit interactions
• Parametric multi-element coupling architecture for coherent and dissipative control of superconducting qubits
• Scalable multiphoton generation from cavity-synchronized single-photon sources
• Quasi-Perfect State Transfer in Spin Chains via Parametrization of On-Site Energies
• Tunable $\Lambda$-type system made of a superconducting qubit pair
• Supercomputer simulations of transmon quantum computers
• Fast microwave-driven two-qubit gates between fluxonium qubits with a transmon coupler
• Spectrum analysis with parametrically modulated transmon qubits
• Scalable quantum simulator with an extended gate set in giant atoms
• Parametric phase modulation in superconducting circuits
• Expanding Hardware-Efficiently Manipulable Hilbert Space via Hamiltonian Embedding
• Tuning and Amplifying the Interactions in Superconducting Quantum Circuits with Subradiant Qubits
• Full control of superconducting qubits with combined on-chip microwave and flux lines
• Concurrent Fermionic Simulation Gate
• Robustness Enhancement of Universal Noncyclic Geometric Gates via Evolution Optimization
• Error-mitigated Geometric Quantum Control over an Oscillator
• Overhead in Quantum Circuits with Time-Multiplexed Qubit Control
• Comparison of Quantum and Semiclassical Rabi models near multiphoton resonances in the presence of parametric modulation
• Highly efficient microwave storage and retrieval using a superconducting chiral $\Lambda$-type molecule
• Flux-modulated tunable interaction regimes in two strongly nonlinear oscillators
• Loss-induced quantum nonreciprocity and entanglement in superconducting qubits
• The perfect entangler spectrum as a tool to analyze crosstalk
• Engineered Robustness for Nonadiabatic Geometric Quantum Gates
• Systematic Construction of Time-Dependent Hamiltonians for Microwave-Driven Josephson Circuits
• Resonant Coupling Parameter Estimation with Superconducting Qubits