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Quantum teleportation of light beams

Zhang, T. C. and Goh, K. W. and Chou, C. W. and Lodahl, P. and Kimble, H. J. (2003) Quantum teleportation of light beams. Physical Review A, 67 (3). Art. No. 033802. ISSN 1050-2947. doi:10.1103/PhysRevA.67.033802.

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We experimentally demonstrate quantum teleportation for continuous variables using squeezed-state entanglement. The teleportation fidelity for a real experimental system is calculated explicitly, including relevant imperfection factors such as propagation losses, detection inefficiencies, and phase fluctuations. The inferred fidelity for input coherent states is F = 0.61±0.02, which when corrected for the efficiency of detection by the output observer, gives a fidelity of 0.62. By contrast, the projected result based on the independently measured entanglement and efficiencies is 0.69. The teleportation protocol is explained in detail, including a discussion on discrepancy between experiment and theory, as well as on the limitations of the current apparatus.

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Additional Information:© 2003 The American Physical Society. Received 12 July 2002; published 11 March 2003. The contributions of J. Buck and A. Furusawa are gratefully acknowledged. This research was funded by the National Science Foundation, by the Office of Naval Research, by the Caltech MURI on Quantum Networks administered by the Office of Army Research, and by the NSF sponsored Institute for Quantum Information. T.C.Z. was partially supported by the TRAPOYT of MOE, P.R.C.
Funding AgencyGrant Number
Office of Naval Research (ONR)UNSPECIFIED
Army Research Office (ARO)UNSPECIFIED
Ministry of Education (China)UNSPECIFIED
Subject Keywords:teleportation; quantum optics; information theory; quantum entanglement; optical squeezing; quantum communication; optical communication
Issue or Number:3
Record Number:CaltechAUTHORS:ZHApra03
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:4186
Deposited By: Tony Diaz
Deposited On:07 Aug 2006
Last Modified:08 Nov 2021 20:15

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