Authors: Petr Stepanov, Ivan Amelio, Jean-Guy Rousset, Jacqueline Bloch, Aristide Lemaître, Alberto Amo, Anna Minguzzi, Iacopo Carusotto, Maxime Richard
Published: 2019-08-27
DOI: 10.1038/s41467-019-11886-3
Source: Full article
AbstractExciton-polaritons in semiconductor microcavities constitute the archetypal realization of a quantum fluid of light. Under coherent optical drive, remarkable effects such as superfluidity, dark solitons or the nucleation of vortices have been observed, and can be all understood as specific manifestations of the condensate collective excitations. In this work, we perform a Brillouin scattering experiment to measure their dispersion relation $$\omega ({\bf{k}})$$