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arXiv · 1009.5907

Probing the Dynamics of Spontaneous Quantum Vortices in Polariton Superfluids

K. G. Lagoudakis·F. Manni·B. Pietka·M. Wouters·T. C. H. Liew·V. Savona·A. V. Kavokin·R. André·B. Deveaud-Plédran
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Abstract

The experimental investigation of spontaneously created vortices is of utmost importance for the understanding of quantum phase transitions towards a superfluid phase, especially for two dimensional systems that are expected to be governed by the Berezinski-Kosterlitz-Thouless physics. By means of time resolved near-field interferometry we track the path of such vortices, created at random locations in an exciton-polariton condensate under pulsed non-resonant excitation, to their final pinning positions imposed by the stationary disorder. We formulate a theoretical model that successfully reproduces the experimental observations.

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K. G. Lagoudakis, F. Manni, B. Pietka, M. Wouters, T. C. H. Liew, V. Savona, A. V. Kavokin, R. André, B. Deveaud-Plédran. 2010-09-29. Probing the Dynamics of Spontaneous Quantum Vortices in Polariton Superfluids. https://doi.org/10.1103/physrevlett.106.115301

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