Characterization of drive-induced unwanted state transitions in superconducting circuits

Abstract

Microwave drives are essential for implementing control and readout operations in superconducting quantum circuits. However, increasing the drive strength eventually leads to unwanted state transitions which limit the speed and fidelity of such operations. In this work, we systematically investigate such transitions in a fixed-frequency qubit subjected to microwave drives spanning a 9 GHz frequency range. We identify the physical origins of these transitions and classify them into three categories. (1) Resonant energy exchange with parasitic two-level systems, activated by drive-induced ac-Stark shifts, (2) multi-photon transitions to non-computational states, intrinsic to the circuit Hamiltonian, and (3) inelastic scattering processes in which the drive causes a state transition in the superconducting circuit, while transferring excess energy to a spurious electromagnetic mode or two-level system (TLS) material defect. We show that the Floquet steady-state simulation, complemented by an electromagnetic simulation of the physical device, accurately predicts the observed transitions that do not involve TLS. Our results provide a comprehensive classification of these transitions and offer mitigation strategies through informed choices of drive frequency as well as improved circuit design.

27 pages, 18 figures

References in corpus (43)

• Charge insensitive qubit design derived from the Cooper pair box
• QuTiP 2: A Python framework for the dynamics of open quantum systems
• Suppressing quantum errors by scaling a surface code logical qubit
• Resolving photon number states in a superconducting circuit
• Confining the state of light to a quantum manifold by engineered two-photon loss
• Suppressing Charge Noise Decoherence in Superconducting Charge Qubits
• Controlling the spontaneous emission of a superconducting transmon qubit
• AC-Stark Shift and Dephasing of a Superconducting Qubit Strongly Coupled to a Cavity Field
• Qubit-photon interactions in a cavity: Measurement induced dephasing and number splitting
• Real-time quantum error correction beyond break-even
• Black-box superconducting circuit quantization
• Decoherence benchmarking of superconducting qubits
• Fast Universal Control of an Oscillator with Weak Dispersive Coupling to a Qubit
• High-Fidelity, Frequency-Flexible Two-Qubit Fluxonium Gates with a Transmon Coupler
• Dynamics of Transmon Ionization
• Parametric-resonance entangling gates with a tunable coupler
• Scqubits: a Python package for superconducting qubits
• Disentangling Losses in Tantalum Superconducting Circuits
• Measurement-Induced State Transitions in a Superconducting Qubit: Within the Rotating Wave Approximation
• One hundred second bit-flip time in a two-photon dissipative oscillator
• Observation of Josephson Harmonics in Tunnel Junctions
• TLS Dynamics in a Superconducting Qubit Due to Background Ionizing Radiation
• Measurement-Induced Transmon Ionization
• Demonstrating a long-coherence dual-rail erasure qubit using tunable transmons
• Quantum Error Correction of Qudits Beyond Break-even
• On the static effective Hamiltonian of a rapidly driven nonlinear system
• Enhancing Dispersive Readout of Superconducting Qubits Through Dynamic Control of the Dispersive Shift: Experiment and Theory
• High-fidelity parametric beamsplitting with a parity-protected converter
• Error per single-qubit gate below $10^{-4}$ in a superconducting qubit
• The squeezed Kerr oscillator: spectral kissing and phase-flip robustness
• Two-level system hyperpolarization using a quantum Szilard engine
• Quantitative evaluation of defect-models in superconducting phase qubits
• Realization of High-Fidelity CZ Gate based on a Double-Transmon Coupler
• Phonon engineering of atomic-scale defects in superconducting quantum circuits
• Model-based Optimization of Superconducting Qubit Readout
• Quantum Sensors for Microscopic Tunneling Systems
• Benchmarking the readout of a superconducting qubit for repeated measurements
• High-Coherence Kerr-cat qubit in 2D architecture
• Measurement-induced state transitions in dispersive qubit readout schemes
• Spin Environment of a Superconducting Qubit in High Magnetic Fields
• Impact of Josephson junction array modes on fluxonium readout
• Offset Charge Dependence of Measurement-Induced Transitions in Transmons
• A Linear Quantum Coupler for Clean Bosonic Control

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• Systematic Construction of Time-Dependent Hamiltonians for Microwave-Driven Josephson Circuits
• Deterministic Quantum Communication Between Fixed-Frequency Superconducting Qubits via Broadband Resonators
• Passive quantum error correction of photon loss at breakeven
• Mitigating state transition errors during readout with a synchronized flux pulse
• Quasiparticle-induced decoherence of a driven superconducting qubit