Optical control of the current-voltage relation in stacked superconductors

Frank Schlawin, Anastasia S. D. Dietrich, and Dieter Jaksch
Phys. Rev. B 100, 134510 – Published 22 October 2019

Abstract

We simulate the current-voltage relation of short layered superconductors, which we model as stacks of capacitively coupled Josephson junctions. The system is driven by external laser fields, in order to optically control the voltage drop across the junction. We identify parameter regimes in which supercurrents can be stabilized against thermally induced phase slips, thus reducing the effective voltage across the superconductor. Furthermore, single driven Josephson junctions are known to exhibit phase-locked states, where the superconducting phase is locked to the driving field. We numerically observe their persistence in the presence of thermal fluctuations and capacitive coupling between adjacent Josephson junctions. Our results indicate how macroscopic material properties can be manipulated by exploiting the large optical nonlinearities of Josephson plasmons.

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  • Received 15 May 2019

DOI:https://doi.org/10.1103/PhysRevB.100.134510

©2019 American Physical Society

Physics Subject Headings (PhySH)

Nonlinear DynamicsCondensed Matter, Materials & Applied Physics

Authors & Affiliations

Frank Schlawin*, Anastasia S. D. Dietrich, and Dieter Jaksch

  • Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom

  • *frank.schlawin@physics.ox.ac.uk

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Issue

Vol. 100, Iss. 13 — 1 October 2019

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