Coherent-light emission from exciton condensates in semiconductor quantum wells
Contribuinte(s) |
Universidad de Alicante. Departamento de Física Aplicada Grupo de Nanofísica |
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Data(s) |
22/11/2012
22/11/2012
16/10/1998
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Resumo |
We show that a quasi-two dimensional condensate of optically active excitons emits coherent light even in the absence of population inversion. This allows an unambiguous and clear experimental detection of the condensed phase. We prove that, due to the exciton–photon coupling, quantum and thermal fluctuations do not destroy condensation at finite temperature. Suitable conditions to achieve condensation are temperatures of a few K for typical exciton densities and the use of a pulsed and preferably circularly polarized, laser. Work supported in part by MEC of Spain under Contract Number PB96-0085, by the Fundación Ramón Areces and by the U.S. Army Research Office under Contract Number DAAH04-96-1-0183. |
Identificador |
FERNÁNDEZ-ROSSIER, J.; TEJEDOR, C.; MERLIN, R. “Coherent-light emission from exciton condensates in semiconductor quantum wells”. Solid State Communications. Vol. 108, No. 7 (16 Oct. 1998). ISSN 0038-1098, pp. 473-477 0038-1098 (Print) 1879-2766 (Online) http://hdl.handle.net/10045/25265 10.1016/S0038-1098(98)00389-5 |
Idioma(s) |
eng |
Publicador |
Elsevier Science |
Relação |
http://dx.doi.org/10.1016/S0038-1098(98)00389-5 |
Direitos |
info:eu-repo/semantics/restrictedAccess |
Palavras-Chave | #Coherent light emission #Exciton condensates #Semiconductor quantum wells #Física de la Materia Condensada |
Tipo |
info:eu-repo/semantics/article |