Voltage-Controlled Superconducting Quantum Bus

Abstract

We demonstrate the ability of an epitaxial semiconductor-superconductor nanowire to serve as a field-effect switch to tune a superconducting cavity. Two superconducting gatemon qubits are coupled to the cavity, which acts as a quantum bus. Using a gate voltage to control the superconducting switch yields up to a factor of 8 change in qubit-qubit coupling between the on and off states without detrimental effect on qubit coherence. High-bandwidth operation of the coupling switch on nanosecond timescales degrades qubit coherence.

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Cited by in corpus (37)

• A Quantum Engineer's Guide to Superconducting Qubits
• Superconducting Gatemon Qubit based on a Proximitized Two-Dimensional Electron Gas
• A Parity-Protected Superconductor-Semiconductor Qubit
• A perspective on semiconductor-based superconducting qubits
• Missing Shapiro steps in topologically trivial Josephson Junction on InAs quantum well
• Induced superconducting pairing in integer quantum Hall edge states
• Destructive Little-Parks Effect in a Full-Shell Nanowire-based Transmon
• Gate-Tunable Transmon Using Selective-Area-Grown Superconductor-Semiconductor Hybrid Structures on Silicon
• Superconducting resonators with voltage-controlled frequency and nonlinearity
• Tuning supercurrent in Josephson field effect transistors using h-BN dielectric
• Demonstration of nonlocal Josephson effect in Andreev molecules
• Magnetic-Field-Compatible Superconducting Transmon Qubit
• Gate-tunable kinetic inductance in proximitized nanowires
• Majorana oscillations and parity crossings in semiconductor-nanowire-based transmon qubits
• Voltage-tunable superconducting resonators: a platform for random access quantum memory
• Superconducting islands with semiconductor-nanowire-based topological Josephson junctions
• Controlled DC Monitoring of a Superconducting Qubit
• Flip-chip-based microwave spectroscopy of Andreev bound states in a planar Josephson junction
• Quasiparticle dynamics in epitaxial Al-InAs planar Josephson junctions
• Superconducting coupler with exponentially large on-off ratio
• Tunable Capacitor For Superconducting Qubits Using an InAs/InGaAs Heterostructure
• Gatemonium: A Voltage-Tunable Fluxonium
• Broadband microwave spectroscopy of semiconductor nanowire-based Cooper-pair transistors
• Few-mode to mesoscopic junctions in gatemon qubits
• Frequency Fluctuations in Tunable and Nonlinear Microwave Cavities
• Quantum versus classical transport of energy in coupled two-level systems
• Nonlinearity of transparent SNS weak links decreases sharply with length
• Implementation of single-qubit gates via parametric modulation in the Majorana transmon
• Dynamics of parafermionic states in transport measurements
• Microwave Andreev bound state spectroscopy in a semiconductor-based Planar Josephson junction
• Solid-State Reactions at Niobium-Germanium Interfaces in Hybrid Superconductor-Semiconductor Devices
• Detector of microwave photon pairs based on a Josephson photomultiplier
• Josephson tunnel junction arrays and Andreev weak links: linked by a single energy-phase relation
• Side-gate modulation of supercurrent in InSb nanoflag-based Josephson junctions
• Integration of topological insulator Josephson junctions in superconducting qubit circuits
• Observation of Distinct Superconducting Phases in Hyperdoped p-type Germanium
• Time-Dependent Dephasing and Quantum Transport