Photon emission as a source of coherent behaviour of polaritons
Herbert Vinck-Posada (1), Boris A. Rodriguez (1), P.S.S. Guimaraes, (2), Alejandro Cabo (3), Augusto Gonzalez (3) ((1) Universidad de, Antioquia, Medellin, (2) Universidade Federal de Minas Gerais, (3) ICIMAF,, Havana)
TL;DR
This paper demonstrates that photon emission combined with Coulomb interactions can induce a dynamical coherent state in an exciton-polariton system without the need for phonon thermalization, supported by exact diagonalization results.
Contribution
It introduces a novel mechanism for coherence in polariton systems driven solely by photon emission and Coulomb interactions, without relying on phonon thermalization.
Findings
Photon emission and Coulomb interactions can induce coherence
Exact diagonalization confirms the dynamical coherent state
Coherence achieved without phonon thermalization
Abstract
We show that the combined effect of photon emission and Coulomb interactions may drive an exciton-polariton system towards a dynamical coherent state, even without phonon thermalization or any other relaxation mechanism. Exact diagonalization results for a finite system (a multilevel quantum dot interacting with the lowest energy photon mode of a microcavity) are presented in support to this statement.
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