Hybrid superinductance with Al/InAs

Abstract

We report microwave spectroscopy of Josephson junctions chains made from an epitaxial Al/InAs heterostructure. The chains exhibit superinductance, with characteristic wave impedance exceeding $R_Q=\hslash /(2e{)}^2$. The planar nature of the junctions results in a large plasma frequency, with no measurable deviations from ideal dispersion up to $12\mathrm{GHz}$. Internal quality factors decrease sharply with frequency, which we describe with a simple loss model. The possibility of a loss mechanism intrinsic to the superconductor-semiconductor junction is considered.

6 pages, 4 figures

References in corpus (34)

• Circuit Quantum Electrodynamics
• Fluxonium: single Cooper pair circuit free of charge offsets
• A Semiconductor Nanowire-Based Superconducting Qubit
• The Josephson critical current in a long mesoscopic S-N-S junction
• Efficient and robust analysis of complex scattering data under noise in microwave resonators
• Fast Single-Charge Sensing with an rf Quantum Point Contact
• Implementation of low-loss superinductances for quantum circuits
• Superconducting Gatemon Qubit based on a Proximitized Two-Dimensional Electron Gas
• Spin-orbit splitting of Andreev states revealed by microwave spectroscopy
• Direct microwave measurement of Andreev-bound-state dynamics in a proximitized semiconducting nanowire
• Charge and spin state readout of a double quantum dot coupled to a resonator
• Circuit Quantum Electrodynamics of Granular Aluminum Resonators
• Experimental realization of an intrinsically error-protected superconducting qubit
• Fluxonium: an alternative qubit platform for high-fidelity operations
• Gate-reflectometry dispersive readout and coherent control of a spin qubit in silicon
• High-Fidelity, Frequency-Flexible Two-Qubit Fluxonium Gates with a Transmon Coupler
• Frequency Multiplexing for Readout of Spin Qubits
• Evolution of Nanowire Transmons and Their Quantum Coherence in Magnetic Field
• Density of States below the Thouless Gap in a Mesoscopic SNS Junction
• Kerr coefficients of plasma resonances in Josephson junction chains
• Superconducting proximity effect in epitaxial Al-InAs heterostructures
• Quantum electrodynamics of a superconductor-insulator phase transition
• Suppressed Charge Dispersion via Resonant Tunneling in a Single-Channel Transmon
• Observation of vanishing charge dispersion of a nearly-open superconducting island
• Kerr non-linearity in a superconducting Josephson metamaterial
• Quantum phase slips in superconducting wires with weak inhomogeneities
• Gate-tunable, superconductor-semiconductor parametric amplifier
• Superconducting resonators with voltage-controlled frequency and nonlinearity
• Detecting induced $p\pm ip$ pairing at the Al-InAs interface with a quantum microwave circuit
• Superconductivity from a melted insulator
• Gatemonium: A Voltage-Tunable Fluxonium
• Density of States in a Mesoscopic SNS Junction
• Kerr nonlinearity and parametric amplification with an Al-InAs superconductor-semiconductor Josephson junction
• Development of a Nb-based semiconductor-superconductor hybrid platform