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

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

中国物理B ›› 2010, Vol. 19 ›› Issue (5): 50305-050305.doi: 10.1088/1674-1056/19/5/050305

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

胡雪元¹, 古英¹, 龚旗煌¹, 郭光灿²

(1)State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, China; (2)State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, China;Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026, China

收稿日期:2009-07-08 修回日期:2009-11-09 出版日期:2010-05-15 发布日期:2010-05-15
基金资助:
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).

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

Hu Xue-Yuan(胡雪元)^a), Gu Ying(古英)^a)^†, Gong Qi-Huang(龚旗煌)^a), and Guo Guang-Can(郭光灿)^a)b)

^a State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, China; ^b Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026, China

Received:2009-07-08 Revised:2009-11-09 Online:2010-05-15 Published:2010-05-15
Supported by:
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).

摘要/Abstract

摘要： 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.

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.

Key words: entanglement redistribution, multipartite continuous-variable entanglement, a teleportation network

中图分类号: (Quantum state engineering and measurements)

42.50.Dv

03.65.Ud (Entanglement and quantum nonlocality) 03.67.Hk (Quantum communication) 03.67.Mn (Entanglement measures, witnesses, and other characterizations)

胡雪元, 古英, 龚旗煌, 郭光灿. Unconditional preparation of multipartite continuous-variable entangled states among remote parties[J]. 中国物理B, 2010, 19(5): 50305-050305.

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[J]. Chin. Phys. B, 2010, 19(5): 50305-050305.

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

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

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