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Phys. Rev. Lett. 96, 060504 (2006) [4 pages]

Demonstration of Quantum Telecloning of Optical Coherent States

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Satoshi Koike1, Hiroki Takahashi1,2, Hidehiro Yonezawa1,2, Nobuyuki Takei1,2, Samuel L. Braunstein3, Takao Aoki1,2, and Akira Furusawa1,2
1Department of Applied Physics, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
2CREST, Japan Science and Technology Agency, 1-9-9 Yaesu, Chuoh-ku, Tokyo 103-0028, Japan
3Computer Science, University of York, York YO10 5DD, United Kingdom

Received 25 July 2005; published 16 February 2006

We demonstrate unconditional telecloning for the first time. In particular, we symmetrically and unconditionally teleclone coherent states of light from one sender to two receivers, achieving a fidelity for each clone of F=0.58±0.01, which surpasses the classical limit. This is a manipulation of a new type of multipartite entanglement whose nature is neither purely bipartite nor purely tripartite.

© 2006 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.96.060504
DOI:
10.1103/PhysRevLett.96.060504
PACS:
03.67.Hk, 03.67.Mn, 42.50.Dv
 
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