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Letter

Nature Materials 5, 261–264 (1 April 2006) | doi:10.1038/nmat1587

Enhancement of spin coherence using Q-factor engineering in semiconductor microdisc lasers

S. Ghosh , W. H. Wang , F. M. Mendoza , R. C. Myers , X. Li , N. Samarth , A. C. Gossard & D. D. Awschalom

Semiconductor microcavities offer unique means of controlling light–matter interactions in confined geometries, resulting in a wide range of applications in optical communications and inspiring proposals for quantum information processing and computational schemes. Studies of spin dynamics in microcavities, a new and promising research field, have revealed effects such as polarization beats, stimulated spin scattering and giant Faraday rotation.