期刊
COMPTES RENDUS PHYSIQUE
卷 3, 期 1, 页码 41-52出版社
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/S1631-0705(02)01302-6
关键词
semiconductor microcavities; strong coupling; squeezing; noise reduction; parametric amplification; four-wave mixing
Investigations of quantum effects in semiconductor quantum-well microcavities interacting with laser light in the strong-coupling regime are presented. Modifications of quantum fluctuations of the outgoing light are expected due to the non-linearity originating from coherent exciton-exciton scattering. In the strong-coupling regime, this scattering translates into a four-wave mixing interaction between the mixed exciton-photon states, the polaritons. Squeezing and giant amplification of the polariton field and of the outgoing light field fluctuations are predicted. However, polariton-phonon scattering is shown to yield excess noise in the output field, which may destroy the non-classical effects. Experiments demonstrate evidence for giant amplification due to coherent four-wave mixing of polaritons. Noise reduction below the thermal noise level was also observed. To cite this article: E. Giacobino et al., C. R. Physique 3 (2002) 41-52. (C) 2002 Academie des sciencestditions scientifiques et medicales Elsevier SAS.
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