Deterministically distinguishing a remote Bell state

doi:10.1088/1674-1056/20/1/010307

Abstract It has been proven that, with a single copy provided, the four Bell states cannot be distinguished by local operations and classical communications (LOCC). Traditionally, a Bell basis projective measurement is needed to distinguish the four Bell states, which is usually carried out with a local interference between two particles. This paper presents an interesting protocol that allows two remote parties to distinguish four Bell states deterministically. We prove that our protocol of distinguishing remote Bell states is beyond LOCC.

Keywords: Bell basis measurement LOCC distinguishability

Received: 21 June 2010
Revised: 10 August 2010
Accepted manuscript online:

PACS:	03.67.Dd	(Quantum cryptography and communication security)
	42.50.Dv	(Quantum state engineering and measurements)

Fund: Project supported by the National Natural Science Foundation of China (Grant No. 10905028).

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Zhao Zhi-Guo(赵志国), Peng Wei-Min(彭卫民), and Tan Yong-Gang(谭勇刚) Deterministically distinguishing a remote Bell state 2011 Chin. Phys. B 20 010307

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