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MiS Preprint

Local Equivalence of Rank-Two Quantum Mixed States

Sergio Albeverio, Shao-Ming Fei and Debashish Goswami


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.

Jul 30, 2007
Jul 30, 2007
03.67.-a, 02.20.Hj, 03.65.-w
Local Equivalence, Rank-Two Mixed States

Related publications

2007 Repository Open Access
Sergio Albeverio, Shao-Ming Fei and Debashish Goswami

Local equivalence of rank-2 quantum mixed states

In: Journal of physics / A, 40 (2007) 36, pp. 11113-11117