Invariants for a Class of Nongeneric Three-qubit States

Details Invariants for a Class of Nongeneric Three-qubit States Invariants for a Class of Nongeneric Three-qubit States

2006-06-19

arxiv.org/abs/quant-ph/0606148v1

Commun. Theor. Phys. 45(2006)1007-1010

Physics

Quantum Physics

7 pages

Scientific paper

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 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.

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