Collective terahertz fluctuation modes in a polariton laser

Autor:	M. Em. Spotnitz, N. H. Kwong, R. Binder
Rok vydání:	2023
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics Mesoscale and Nanoscale Physics (cond-mat.mes-hall) FOS: Physical sciences
DOI:	10.48550/arxiv.2302.01482
Popis:	A polariton Bardeen-Cooper-Schrieffer (BCS) state in a semiconductor microcavity is an example of symmetry-broken states in open systems. Fluctuations of the order parameter are an important tool to characterize such a state. With the condensate formed by composite particles, the set of zero-momentum fluctuations spans an infinite-dimensional electron-hole mode subspace. We show that collective fluctuation modes with orbital angular momentum different from that of the order parameter can be obtained with terahertz radiation, and that a physical manifestation of such modes, which are not Higgs modes, can be terahertz gain. Comment: 23 pages, 13 figures
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fed0baea2f84bff0e075a2a12b7ae7e4 Zobrazit plný text záznamu