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From single particle to superfuid excitations in a dissipative polariton gas
Verena Kohnle, Yoan Léger, Michiel Wouters +3
Using angle-resolved heterodyne four-wave-mixing technique, we probe the low momentum excitation spectrum of a coherent polariton gas. The experimental results are well captured by…
Optical manipulation of the wave function of quasiparticles in a solid
R. Cerna, D. Sarchi, T. K. Paraiso +9
Polaritons in semiconductor microcavities are hybrid quasiparticles consisting of a superposition of photons and excitons. Due to the photon component, polaritons are characterized…
Coexisting Non-Equilibrium Condensates with Long-Range Spatial Coherence in Semiconductor Microcavities
D. N. Krizhanovskii, K. G. Lagoudakis, M. Wouters +9
Real and momentum space spectrally resolved images of microcavity polariton emission in the regime of condensation are investigated under non resonant excitation using a laser sour…
Quantised Vortices in an Exciton-Polariton Fluid
K. G. Lagoudakis, M. Wouters, M. Richard +5
One of the most striking quantum effects in a low temperature interacting Bose gas is superfluidity. First observed in liquid 4He, this phenomenon has been intensively studied in a…
Synchronized and Desynchronized Phases of Exciton-Polariton Condensates in the Presence of Disorder
A. Baas, K. G. Lagoudakis, M. Richard +3
Condensation of exciton-polaritons in semiconductor microcavities takes place despite in plane disorder. Below the critical density the inhomogeneity of the potential seen by the p…