Deterministically distinguishing a remote Bell state |
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Authors: | Zhao Zhi-Guo Peng Wei-Min Tan Yong-Gang |
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Affiliation: | Physics and Information Engineering Department, Luoyang Normal College, Luoyang 471022, China |
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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. |
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Keywords: | Bell basis measurement LOCC distinguishability |
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