Spinor stochastic resonance

H. Abbaspour, S. Trebaol, F. Morier-Genoud, M. T. Portella-Oberli, and B. Deveaud
Phys. Rev. B 91, 155307 – Published 17 April 2015

Abstract

We report on noise-induced spin ordering in a collective quasiparticle system: spinor stochastic resonance. Synergetic interplay of a polarization-modulated signal and a polarization noise allows us to switch coherently between the two metastable states of a microcavity-polariton spin bistable system. Spinor stochastic resonance is demonstrated in a zero-dimensional GaAs based microcavity. The resonance behaviors of both the spin amplification and the signal-to-noise ratio are experimentally evidenced as a function of the noise strength for different amplitude modulations. They are theoretically reproduced using a spinor Gross-Pitaevskii equation driven by a randomly polarized laser field.

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  • Received 19 October 2014
  • Revised 12 March 2015

DOI:https://doi.org/10.1103/PhysRevB.91.155307

©2015 American Physical Society

Authors & Affiliations

H. Abbaspour1,*, S. Trebaol2, F. Morier-Genoud1, M. T. Portella-Oberli1, and B. Deveaud1

  • 1Laboratory of Quantum Optoelectronics, École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
  • 2Unités Mixtes de Recherche, FOTON, Centre National de la Recherche Scientifique, Université de Rennes 1, Enssat, F22305 Lannion, France

  • *hadis.abbaspour@epfl.ch

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Vol. 91, Iss. 15 — 15 April 2015

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