Eltschka, Christopher and Siewert, Jens (2014) Practical method to obtain a lower bound to the three-tangle. PHYSICAL REVIEW A, 89 (2): 022312. ISSN 1050-2947, 1094-1622
Full text not available from this repository. (Request a copy)Abstract
The quantitative assessment of the entanglement in multipartite quantum states is, apart from its fundamental importance, a practical problem. Recently there has been significant progress in developing new methods to determine certain entanglement measures. In particular, there is a method-in principle, analytical-to compute a certified lower bound for the three-tangle. The purpose of this work is to provide a manual for the implementation of this approach and to explicitly discuss several analytically solvable cases in order to gauge the numerical tools. Moreover, we derive a simple analytical bound for the mixed-state three-tangle.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | 3-QUBIT ENTANGLEMENT; QUANTUM; WITNESSES; STATES; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Richter > Group Klaus Richter |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 26 Nov 2019 15:11 |
| Last Modified: | 26 Nov 2019 15:11 |
| URI: | https://pred.uni-regensburg.de/id/eprint/10675 |
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