Abstract
The authors show that in all-metallic Josephson field effect transistors, the statistics of electron flow due to the gate leakage current is imprinted onto the Josephson switching current and explains its reduction.
Highlights
Understanding the dynamics of quasiparticle excitations in a superconductor and how they interact with the superconducting condensate is important for understanding dissipation mechanisms responsible for decoherence in superconducting devices [1,2]
It has been observed that the critical current of a superconducting weak link formed by a mesoscopic nanowire or constriction [12,13,14,15,16,17,18,19] can be suppressed by applying a voltage bias to a side gate in the vicinity of the weak link
Our experiment reveals that the gate-controllable switching current is triggered by high energy electrons leaking from the gate to the Josephson junction
Summary
Understanding the dynamics of quasiparticle excitations in a superconductor and how they interact with the superconducting condensate is important for understanding dissipation mechanisms responsible for decoherence in superconducting devices [1,2]. It has been observed that the critical current of a superconducting weak link formed by a mesoscopic nanowire or constriction [12,13,14,15,16,17,18,19] can be suppressed by applying a voltage bias to a side gate in the vicinity of the weak link This all-metal-based superconducting device, which at first sight seems to operate like a semiconducting field effect transistor, could be used in quantum technologies as a tunable inductance or switch provided dissipation is demonstrated to be low [20,21,22].
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
