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Nanocrystals in silicon photonic crystal standing-wave cavities as spin-photon phase gates for quantum information processing

Appl. Phys. Lett. 91, 151105 (2007); doi:10.1063/1.2795798

Published 9 October 2007

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Y.-F. Xiao
Optical Nanostructures Laboratory, Columbia University, New York, New York 10027, USA and Key Laboratory of Quantum Information, University of Science & Technology of China, Hefei 230026, People's Republic of China

J. Gao, X. Yang, and R. Bose
Optical Nanostructures Laboratory, Columbia University, New York, New York 10027, USA

G.-C. Guo
Key Laboratory of Quantum Information, University of Science & Technology of China, Hefei 230026, People's Republic of China

C. W. Wong
Optical Nanostructures Laboratory, Columbia University, New York, New York 10027, USA
By virtue of a silicon high-Q photonic crystal nanocavity, we propose and examine theoretically interactions between a stationary electron spin qubit of a semiconductor nanocrystal and a flying photon qubit. Firstly, we introduce, derive, and demonstrate the explicit conditions toward realization of a spin-photon phase gate, and propose these interactions as a generalized quantum interface for quantum information processing. Secondly, we examine single-spin-induced reflections as direct evidence of intrinsic bare and dressed modes in our coupled nanocrystal-cavity system. ©2007 American Institute of Physics
History: Received 1 June 2007; accepted 19 September 2007; published 9 October 2007
Permalink: http://link.aip.org/link/?APPLAB/91/151105/1
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0003-6951 (print)   1077-3118 (online)
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