Lagoudakis, Konstantinos G.Manni, FrancescoPietka, BarbaraWouters, MichielLiew, Timothy Chi HinSavona, VincenzoKavokin, Alexey V.André, RegisDeveaud-Plédran, Benoît2011-03-252011-03-252011-03-25201110.1103/PhysRevLett.106.115301https://infoscience.epfl.ch/handle/20.500.14299/65648WOS:000288450800012The 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 nonresonant excitation, to their final pinning positions imposed by the stationary disorder. We formulate a theoretical model that successfully reproduces the experimental observations.vorticesdynamicspolaritoncondensationtext::journal::journal article::research article