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Phys. Rev. A 65, 062302 (2002) [4 pages]

Nonlocality swapping

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Li-Yi Hsu
Department of Physics, National Taiwan University, Taipei, Taiwan, Republic of China

Received 21 November 2001; published 29 May 2002

We propose a measurement scheme of generalized Bell states in which, although entanglement is destroyed, the nonlocality feature can be preserved and swapped. Here we consider two quantum systems: one consisting of two-party three-level maximal entangled pairs; the other being three-party two-level maximal entangled pairs. It is found that these local immeasurable states can be prepared without any classical communication and local operation. Moreover, nonmaximal entangled states cannot preserve nonlocality.

© 2002 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.65.062302
DOI:
10.1103/PhysRevA.65.062302
PACS:
03.67.Hk, 03.65.Ud