Another convex combination of product states for the separable Werner state
| dc.creator | Azuma, Hiroo | |
| dc.creator | Ban, Masashi | |
| dc.date | 2006-01-07 | |
| dc.date | 2006-02-09 | |
| dc.date.accessioned | 2026-07-07T07:00:17Z | |
| dc.date.available | 2026-07-07T07:00:17Z | |
| dc.description | In this paper, we write down the separable Werner state in a two-qubit system explicitly as a convex combination of product states, which is different from the convex combination obtained by Wootters' method. The Werner state in a two-qubit system has a single real parameter and varies from inseparable state to separable state according to the value of its parameter. We derive a hidden variable model that is induced by our decomposed form for the separable Werner state. From our explicit form of the convex combination of product states, we understand the following: The critical point of the parameter for separability of the Werner state comes from positivity of local density operators of the qubits. | |
| dc.description | 7 pages, Latex2e; v2: 9 pages, title changed, an appendix and a reference added, minor corrections | |
| dc.identifier | https://arxiv.org/abs/quant-ph/0601044 | |
| dc.identifier | http://arxiv.org/abs/quant-ph/0601044 | |
| dc.identifier | Phys. Rev. A 73, 032315 (2006) | |
| dc.identifier | doi:10.1103/PhysRevA.73.032315 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/107997 | |
| dc.subject | Quantum Physics | |
| dc.title | Another convex combination of product states for the separable Werner state | |
| dc.type | text |