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Science 20 May 2005:
Vol. 308. no. 5725, pp. 1122 - 1123
DOI: 10.1126/science.1113753
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Perspectives

PHYSICS:
Control at the Quantum Level

Thomas F. Krauss

Controlling the interaction between an emitter and an optical cavityresonator in the solid state is of great interest for quantum devices, suchas single-photon emitters and, eventually, quantum computers. In his Perspective, Krauss highlights the report of Badolato et al., who achievemuch greater control than hitherto possible in a quantum dot-photoniccrystal nanocavity system. Krauss concludes that this work is a significantstep toward producing practical devices.

The author is at the School of Physics and Astronomy, University of St. Andrews, St. Andrews KY16 9SS, UK. E-mail: tfk{at}st-and.ac.uk

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Science. ISSN 0036-8075 (print), 1095-9203 (online)