Physics – Quantum Physics
Scientific paper
2005-05-21
Phys. Lett. A 340 (2005) 37-42
Physics
Quantum Physics
9 pages
Scientific paper
10.1016/j.physleta.2005.04.005
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.
Albeverio Sergio
Fei Shao-Ming
Goswami Debashish
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