Vanadium gate-controlled Josephson half-wave nanorectifier

Abstract

Recently, the possibility to tune the critical current of conventional metallic superconductors via electrostatic gating was shown in wires, Josephson weak-links and superconductor-normal metal-superconductor junctions. Here we exploit such a technique to demonstrate a gate-controlled vanadium-based Dayem nano-bridge operated as a \emph{half-wave} rectifier at $3$ K. Our devices exploit the gate-driven modulation of the critical current of the Josephson junction, and the resulting steep variation of its normal-state resistance, to convert an AC signal applied to the gate electrode into a DC one across the junction. All-metallic superconducting gated rectifiers could provide the enabling technology to realize tunable photon detectors and diodes useful for superconducting electronics circuitry.

5 pages, 4 figures

References in corpus (4)

• Charge insensitive qubit design derived from the Cooper pair box
• Hybrid InAs nanowire-vanadium proximity SQUID
• Cooling electrons from 1 K to 400 mK with V-based nanorefrigerators
• Josephson current in nanofabricated V/Cu/V mesoscopic junctions