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Invariants for a Class of Nongeneric Three-qubit States

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.

preprint2006arXivOpen access
Bao-Zhi SunShao-Ming Fei
quant-ph
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Open access2 authors1 topic
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Bao-Zhi SunShao-Ming Fei

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