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arXiv · 1505.00929

Spinor Stochastic Resonance

H. Abbaspour·S. Trebaol·F. Morier-Genoud·M. T. Portella-Oberli·B. Deveaud
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Abstract

We report on noise-induced-spin-ordering in a collective quasipaticle 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 behavior 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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H. Abbaspour, S. Trebaol, F. Morier-Genoud, M. T. Portella-Oberli, B. Deveaud. 2015-05-05. Spinor Stochastic Resonance. https://doi.org/10.1103/physrevb.91.155307

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