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arXiv · quant-ph/0505156

Local Invariants for a Class of Mixed States

Sergio Albeverio·Shao-Ming Fei·Debashish Goswami
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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.

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Sergio Albeverio, Shao-Ming Fei, Debashish Goswami. 2005-05-21. Local Invariants for a Class of Mixed States. https://doi.org/10.1016/j.physleta.2005.04.005

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