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Invariants for a Class of Nongeneric Three-Qubit States |
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| Authors: | SUN Bao-Zhi FEI Shao-Ming |
| Institution: | 1. Department of Mathematics, Capital Normal University, Beijing 100037, China ;2. Max-Planck-Institute for Mathematics in the Sciences, 04103 Leipzig, Germany ;3. Department of Mathematics, Qufu Normal University, Qufu 273165, China |
| Abstract: | We investigate the equivalence of quantum states under local unitary transformations. A complete set of invariants under local unitary transformations are 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. |
| Keywords: | invariant quantum state local unitary transformation |
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