Article ID Journal Published Year Pages File Type
9868140 Physics Letters A 2005 6 Pages PDF
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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Related Topics
Physical Sciences and Engineering Physics and Astronomy Physics and Astronomy (General)
Preview
Local invariants for a class of mixed states
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