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Realization of a single-Cooper-pair Josephson laser

Fei Chen, Juliang Li, A. D. Armour, E. Brahimi, Joel Stettenheim, A. J. Sirois, R. W. Simmonds, M. P. Blencowe, and A. J. Rimberg
Phys. Rev. B 90, 020506(R) – Published 22 July 2014
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Abstract

We have embedded a voltage-biased Cooper-pair transistor (CPT) in a high-Q superconducting microwave cavity. When the energy given to a tunneling Cooper pair by the voltage bias is equal to a multiple of the cavity photon frequency, the cavity is pumped to a strongly nonequilibrium state. The cavity photons act back on the CPT, allowing us to enter a regime of strongly correlated electronic-photonic transport. We directly observe the effects of photonic backaction on Cooper-pair transport, and see clear evidence for single-emitter lasing in the form of emission dominated by stimulated transport processes.

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  • Received 21 February 2014
  • Revised 26 June 2014

DOI:https://doi.org/10.1103/PhysRevB.90.020506

©2014 American Physical Society

Synopsis

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A Cooper-Pair Laser

Published 22 July 2014

A superconducting transistor embedded in a microcavity acts like a single-emitter laser that could be used to generate nonclassical light.

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Authors & Affiliations

Fei Chen1, Juliang Li1, A. D. Armour2, E. Brahimi1, Joel Stettenheim1, A. J. Sirois3, R. W. Simmonds4, M. P. Blencowe1, and A. J. Rimberg1,*

  • 1Department of Physics and Astronomy, Dartmouth College, Hanover, New Hampshire 03755, USA
  • 2School of Physics and Astronomy, University of Nottingham, Nottingham NG7 2RD, United Kingdom
  • 3University of Colorado, 2000 Colorado Avenue, Boulder, Colorado 80309, USA
  • 4National Institute of Standards and Technology, Boulder, Colorado 80305, USA

  • *ajrimberg@dartmouth.edu

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Issue

Vol. 90, Iss. 2 — 1 July 2014

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