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All-Versus-Nothing Violation of Local Realism by Swapping Entanglement | | Zeng-Bing Chen
; Yu-Ao Chen
; Jian-Wei Pan
; | | Date: |
24 May 2005 | | Subject: | quant-ph | | Abstract: | The usual entanglement swapping protocol can entangle two particles that never interact. Here we demonstrate an all-versus-nothing violation of local realism for an incomplete entanglement swapping process, where there is no classical communication between different spatial locations. A Clauser-Horne-Shimony-Holt-type inequality for two particles entangled by entanglement swapping is proposed for a practical experiment and can be violated quantum mechanically up to 4 beyond the standard Cirel’son bound 2sqr(2). Our result uncovers the nonlocal character of entanglement swapping. The experimental test of the nonlocality under current technology is also discussed. | | Source: | arXiv, quant-ph/0505178 | | Services: | Forum | Review | PDF | Favorites | |
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