arXiv:quant-ph/0606148 · Communications in Theoretical Physics

Invariants for a Class of Nongeneric Three-Qubit States

Sun Bao-Zhi, Fei Shao-Ming

Published Jun 1, 2006• 4 citations

Abstract

We investigate the equivalence of quantum states under local unitary transformations. A complete set of invariants under local unitary transformations are presented for a class of non-generic three-qubit mixed states. It is shown that two such states in this class are locally equivalent if and only if all these invariants have equal values for them.

DOI: 10.1088/0253-6102/45/6/010

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