Local distinguishability of multipartite unitary operations
- Publication Type:
- Journal Article
- Physical Review Letters, 2008, 100 (2)
- Issue Date:
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We show that any two different unitary operations acting on an arbitrary multipartite quantum system can be perfectly distinguished by local operations and classical communication when a finite number of runs is allowed. Intuitively, this result indicates that the lost identity of a nonlocal unitary operation can be recovered locally. No entanglement between distant parties is required. © 2008 The American Physical Society.
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