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25 April 2024

» arxiv » quant-ph/0505156

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Local Invariants for a Class of Mixed States
Sergio Albeverio ; Shao-Ming Fei ; Debashish Goswami ;
Date:	21 May 2005
Journal:	Phys. Lett. A 340 (2005) 37-42
Subject:	quant-ph
Abstract:	We investigate the equivalence of quantum states under local unitary transformations. A complete set of invariants under local unitary transformations is presented for a class of mixed states. It is shown that two states in this class are locally equivalent if and only if all these invariants have equal values for them.
Source:	arXiv, quant-ph/0505156
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