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arXiv · 1303.1027

Dymamical Casimir emission from polariton condensates

Selma Koghee·Michiel Wouters
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Abstract

We study theoretically the dynamical Casimir effect in an exciton-polariton condensate that is suddenly created by an ultrashort laser pulse at normal incidence. As a consequence of the abrupt change of the quantum vacuum, Bogoliubov excitations are generated. The subsequent evolution, governed by polariton interactions and losses, is studied within a linearized truncted Wigner approximation. We focus in particular on the momentum distribution and spatial coherence. The limiting behavior at large and small momenta is determined analytically. A simple scaling relation for the final condensate depletion as a function of the system parameters is found and the correlation length is shown to depend linearly on the condensate depletion.

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Selma Koghee, Michiel Wouters. 2013-03-05. Dymamical Casimir emission from polariton condensates. https://doi.org/10.1103/physrevlett.112.036406

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