Anomalous modulation of Josephson radiation in nanowire-based Josephson junctions

Abstract

We investigate the Josephson radiation of nanowire (NW)-based Josephson junctions in a parallel magnetic field. The Josephson junction made of an InAs NW with superconducting Al leads shows the emission spectra which follow the Josephson frequency $f_J$ over the range 4-8 GHz at zero magnetic field. We observe an apparent deviation of the emission spectra from the Josephson frequency which is accompanied by a strong enhancement of the switching current above a magnetic field of $\sim 300$ mT. The observed modulations can be understood to reflect trivial changes in the superconducting circuit surrounding the device which is strongly affected by the applied magnetic field. Our findings will provide a way to accurately investigate topological properties in NW-based systems.

arXiv comment18 pages, 6 figures

References in corpus (27)

• Non-Abelian Anyons and Topological Quantum Computation
• Quantum Spin Hall Insulator State in HgTe Quantum Wells
• Unpaired Majorana fermions in quantum wires
• Signatures of Majorana fermions in hybrid superconductor-semiconductor nanowire devices
• Majorana Fermions and a Topological Phase Transition in Semiconductor-Superconductor Heterostructures
• Helical liquids and Majorana bound states in quantum wires
• Evidence of Majorana fermions in an Al - InAs nanowire topological superconductor
• Search for Majorana fermions in superconductors
• Observation of Majorana Fermions in a Nb-InSb Nanowire-Nb Hybrid Quantum Device
• Observation of the fractional ac Josephson effect: the signature of Majorana particles
• Majorana bound states in a coupled quantum-dot hybrid-nanowire system
• Quantized Majorana conductance
• Quantum Hall Effect from the Topological Surface States of Strained Bulk HgTe
• Scaling of Majorana Zero-Bias Conductance Peaks
• $4\pi$-periodic Josephson supercurrent in HgTe-based topological Josephson junctions
• Fractional ac Josephson effect in p- and d-wave superconductors
• Ballistic Majorana nanowire devices
• Gapless Andreev bound states in the quantum spin Hall insulator HgTe
• Zero-Energy Modes from Coalescing Andreev States in a Two-Dimensional Semiconductor-Superconductor Hybrid Platform
• Josephson radiation from gapless Andreev bound states in HgTe-based topological junctions
• Hard superconducting gap in InSb nanowires
• Parity independence of the zero-bias conductance peak in a nanowire based topological superconductor-quantum dot hybrid device
• Magnetically-driven colossal supercurrent enhancement in InAs nanowire Josephson junctions
• Superconducting atomic contacts under microwave irradiation
• Nanosized superconducting constrictions
• Gate tunable parallel double quantum dot in InAs double-nanowire junctions
• Josephson radiation and shot noise of a semiconductor nanowire junction

Cited by in corpus (11)

• From Andreev to Majorana bound states in hybrid superconductor-semiconductor nanowires
• Recent progress on Majorana in semiconductor-superconductor heterostructures--Engineering and detection
• Half-Integer Shapiro Steps in a Short Ballistic InAs Nanowire Josephson Junction
• Top-down fabrication of bulk-insulating topological insulator nanowires for quantum devices
• Quasiparticle trapping at vortices producing Josephson supercurrent enhancement
• Period-doubling in the phase dynamics of a shunted HgTe quantum well Josephson junction
• Josephson radiation from nonlinear dynamics of Majorana zero modes
• AC Josephson effect in a gate-tunable Cd${}_3$As${}_2$ nanowire superconducting weak link
• Transport theory for topological Josephson junctions with a Majorana qubit
• Josephson radiation patterns in underdamped topological Josephson junctions
• DC-operated Josephson junction arrays as a cryogenic on-chip microwave measurement platform