Unconditional preparation of multipartite continuous-variable entangled states among remote parties

doi:10.1088/1674-1056/19/5/050305

Abstract We demonstrate that the $n$-partite continuous-variable entanglement can be unconditionally prepared among $n$ parties that share no common past, from $n$ two-mode squeezed states. Both GHZ-like and cluster-like states can be generated for any nonzero squeezing in the entangled sources. An application of the resulting multipartite entangled state to a teleportation network is illustrated.

Keywords: entanglement redistribution multipartite continuous-variable entanglement a teleportation network

Received: 08 July 2009
Revised: 09 November 2009
Accepted manuscript online:

PACS:	42.50.Dv	(Quantum state engineering and measurements)
	03.65.Ud	(Entanglement and quantum nonlocality)
	03.67.Hk	(Quantum communication)
	03.67.Mn	(Entanglement measures, witnesses, and other characterizations)

Fund: Project supported by the National Natural Science Foundation of China (Grants Nos.~10674009, 10874004 and 10821062) and the National Key Basic Research Program of China (Grant No.~2006CB921601).

Cite this article:

Hu Xue-Yuan(胡雪元), Gu Ying(古英), Gong Qi-Huang(龚旗煌), and Guo Guang-Can(郭光灿) Unconditional preparation of multipartite continuous-variable entangled states among remote parties 2010 Chin. Phys. B 19 050305

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