Eltschka, Christopher and Siewert, Jens (2013) OPTIMAL CLASS-SPECIFIC WITNESSES FOR THREE-QUBIT ENTANGLEMENT FROM GREENBERGER-HORNE-ZEILINGER SYMMETRY. QUANTUM INFORMATION & COMPUTATION, 13 (3-4). pp. 210-220. ISSN 1533-7146,
Full text not available from this repository.Abstract
Recently, a new type of symmetry for three-qubit quantum states was introduced, the so-called Greenberger-Horne-Zeilinger (GHZ) symmetry. It includes the operations which leave the three-qubit standard GHZ state unchanged. This symmetry is powerful as it yields families of mixed states that are, on the one hand, complex enough from the physics point of view and, on the other hand, simple enough mathematically so that their properties can be characterized analytically. We show that by using the properties of GHZ-symmetric states it is straightforward to derive optimal witnesses for detecting class-specific entanglement in arbitrary three-qubit states.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | MIXED STATES; SEPARABILITY; Multipartite entanglement; entanglement witnesses |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 24 Apr 2020 05:45 |
| Last Modified: | 24 Apr 2020 05:45 |
| URI: | https://pred.uni-regensburg.de/id/eprint/17097 |
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