Landau-Zener-Stückelberg-Majorana lasing in circuit quantum electrodynamics. / Shevchenko, S.N.; Neilinger, P.; Bogar, J.; Reshak, M; Oelsner, G; Karpov, D.S.; Hubner, U; Astafiev, Oleg; Grajcar, M.; Il’ichev, E.

In: Physical Review B, Vol. 94, No. 9, 094519, 22.09.2016, p. 1-9.

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  • S.N. Shevchenko
  • P. Neilinger
  • J. Bogar
  • M Reshak
  • G Oelsner
  • D.S. Karpov
  • U Hubner
  • Oleg Astafiev
  • M. Grajcar
  • E. Il’ichev

Abstract

We demonstrate amplification (and attenuation) of a probe signal by a driven two-level quantum system in the Landau-Zener-Stu ̈ckelberg-Majorana regime by means of an experiment, in which a superconducting qubit was strongly coupled to a microwave cavity, in a conventional arrangement of circuit quantum electrodynamics. Two different types of flux qubit, specifically a conventional Josephson junctions qubit and a phase-slip qubit, show similar results, namely, lasing at the working points where amplification takes place. The experimental data are explained by the interaction of the probe signal with Rabi-like oscillations. The latter are created by constructive interference of Landau-Zener-Stu ̈ckelberg-Majorana (LZSM) transitions during the driving period of the qubit. A detailed description of the occurrence of these oscillations and a comparison of obtained data with both analytic and numerical calculations are given.
Original languageEnglish
Article number094519
Pages (from-to)1-9
Number of pages9
JournalPhysical Review B
Volume94
Issue number9
DOIs
Publication statusPublished - 22 Sep 2016
This open access research output is licenced under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License.

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