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Microwave Cooling of Josephson Plasma Oscillations

J. Hammer, M. Aprili, and I. Petković
Phys. Rev. Lett. 107, 017001 – Published 29 June 2011

Abstract

An extended Josephson junction can be described as a microwave cavity coupled to a Josephson oscillator. This is formally equivalent to a Fabry-Perot cavity with a freely vibrating mirror, where it has been shown that radiation pressure from photons in the cavity can reduce (increase) the vibrations of the mirror, effectively cooling (heating) it. We demonstrate that, similarly, the superconducting phase difference across a Josephson junction—the Josephson phase—can be “cooled” or “heated” by microwave excitation of the junction and that both these effects increase with microwave power.

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  • Received 26 October 2010

DOI:https://doi.org/10.1103/PhysRevLett.107.017001

© 2011 American Physical Society

Authors & Affiliations

J. Hammer1, M. Aprili2,*, and I. Petković2

  • 1Institute for Experimental and Applied Physics, University of Regensburg, 93040 Regensburg, Germany
  • 2Laboratoire de Physique des Solides, UMR8502-CNRS, University Paris-Sud, 91405 Orsay Cedex, France

  • *aprili@lps.u-psud.fr

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Issue

Vol. 107, Iss. 1 — 1 July 2011

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