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arXiv:quant-ph/0702026 · e-Journal of Surface Science and Nanotechnology

Quantum Entanglement and Teleportation of Quantum-Dot States in Microcavities

Adam Miranowicz, Şahin Kaya Özdemir, Yu-xi Liu, Grzegorz Chimczak, Masato Koashi, N. Imoto

Published Jan 1, 2007• 3 citations
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Abstract

Generation and control of quantum entanglement are studied in an equivalent-neighbor system of spatially-separated semiconductor quantum dots coupled by a single-mode cavity field. Generation of genuinely multipartite entanglement of qubit states realized by conduction-band electron-spin states in quantum dots is discussed. A protocol for quantum teleportation of electron-spin states via cavity decay is briefly described. [DOI: 10.1380/ejssnt.2007.51]

DOI
10.1380/ejssnt.2007.51

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The experimental scheme for controlled quantum teleportation of tripartite GHZ-like state is presented.With the entanglement generating through the interaction between the quantum dots in microcavities and a single photon, the controlled teleportation can be realized by virtue of Faraday rotation, single photon detection and electron spin orientation measurement.The success probability of the scheme can reach 1 if the cavities are switchable to choice the appropriate Faraday rotation angle.The scheme can be easily generalized to the teleportation of multipartite GHZ-like state.
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