Physics – Condensed Matter – Quantum Gases
Scientific paper
2010-09-29
Phys. Rev. Lett. 106, 115301 (2011)
Physics
Condensed Matter
Quantum Gases
Scientific paper
10.1103/PhysRevLett.106.115301
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.
Andre Régis
Deveaud-Plédran Benoit
Kavokin Alexey V.
Lagoudakis Konstantinos G.
Liew Timothy C. H.
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