Collective terahertz fluctuation modes in a polariton laser

M. Em Spotnitz; N. H. Kwong; R. Binder

doi:10.1103/PhysRevB.107.125309

Collective terahertz fluctuation modes in a polariton laser

M. Em Spotnitz, N. H. Kwong, R. Binder

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

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.

Original language	English (US)
Article number	125309
Journal	Physical Review B
Volume	107
Issue number	12
DOIs	https://doi.org/10.1103/PhysRevB.107.125309
State	Published - Mar 15 2023

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.107.125309

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abstract = "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.",

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Collective terahertz fluctuation modes in a polariton laser

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