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arXiv · 0711.1210

Local Equivalence of Rank-Two Quantum Mixed States

Sergio Albeverio·Shao-Ming Fei·Debashish Goswami
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Abstract

We investigate the equivalence of quantum mixed states under local unitary transformations. For a class of rank-two mixed states, a sufficient and necessary condition of local equivalence is obtained by giving a complete set of invariants under local unitary transformations, such that two states in this class are locally equivalent if and only if all these invariants have equal values for them.

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Sergio Albeverio, Shao-Ming Fei, Debashish Goswami. 2007-11-08. Local Equivalence of Rank-Two Quantum Mixed States. https://doi.org/10.1088/1751-8113%2F40%2F36%2F011

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