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Two-photon lasing by a superconducting qubit

P. Neilinger, M. Rehák, M. Grajcar, G. Oelsner, U. Hübner, and E. Il'ichev
Phys. Rev. B 91, 104516 – Published 19 March 2015

Abstract

We study the response of a magnetic-field-driven superconducting qubit strongly coupled to a superconducting coplanar waveguide resonator. We observed a strong amplification/damping of a probing signal at different resonance points corresponding to a one- and two-photon emission/absorption. The sign of the detuning between the qubit frequency and the probe determines whether amplification or damping is observed. The larger blue detuned driving leads to two-photon lasing, while the larger red detuning cools the resonator. Our experimental results are in good agreement with the theoretical model of qubit lasing and cooling at the Rabi frequency.

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  • Received 8 January 2015
  • Revised 4 March 2015

DOI:https://doi.org/10.1103/PhysRevB.91.104516

©2015 American Physical Society

Authors & Affiliations

P. Neilinger, M. Rehák, and M. Grajcar

  • Department of Experimental Physics, Comenius University, SK-84248 Bratislava, Slovakia and Institute of Physics, Slovak Academy of Sciences, 845 11 Bratislava, Slovakia

G. Oelsner and U. Hübner

  • Leibniz Institute of Photonic Technology, P.O. Box 100239, D-07702 Jena, Germany

E. Il'ichev

  • Leibniz Institute of Photonic Technology, P.O. Box 100239, D-07702 Jena, Germany and Novosibirsk State Technical University, 20 K. Marx Ave., 630092 Novosibirsk, Russia

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Issue

Vol. 91, Iss. 10 — 1 March 2015

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