Communications in Theoretical Physics

Local Invariants for a Class of Tripartite Quantum Mixed States

Xiaohong Wang

Published Feb 1, 2006• 1 citation

Abstract

We study the equivalence of tripartite mixed states under local unitary transformations. The nonlocal properties for a class of tripartite quantum states in ℂ K ⊗ℂ M ⊗ℂ N composite systems are investigated and a complete set of invariants under local unitary transformations for these states is presented. It is shown that two of these states are locally equivalent if and only if all these invariants have the same values.

DOI: 10.1088/0253-6102/45/2/014

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