Entanglement Measures for Intermediate Separability of Quantum States
| dc.creator | Ichikawa, Tsubasa | |
| dc.creator | Sasaki, Toshihiko | |
| dc.creator | Tsutsui, Izumi | |
| dc.date | 2008-09-11 | |
| dc.date | 2009-04-06 | |
| dc.date.accessioned | 2026-07-07T13:13:51Z | |
| dc.date.available | 2026-07-07T13:13:51Z | |
| dc.description | We present a family of entanglement measures R_m which act as indicators for separability of n-qubit quantum states into m subsystems for arbitrary 2 \leq m \leq n. The measure R_m vanishes if the state is separable into m subsystems, and for m = n it gives the Meyer-Wallach measure while for m = 2 it reduces, in effect, to the one introduced recently by Love et al. The measures R_m are evaluated explicitly for the GHZ state and the W state (and its modifications, the W_k states) to show that these globally entangled states exhibit rather distinct behaviors under the measures, indicating the utility of the measures R_m for characterizing globally entangled states as well. | |
| dc.description | 8 pages, 8 figures | |
| dc.identifier | https://arxiv.org/abs/0809.1932 | |
| dc.identifier | http://arxiv.org/abs/0809.1932 | |
| dc.identifier | Phys. Rev. A79 (2009) 052307 | |
| dc.identifier | doi:10.1103/PhysRevA.79.052307 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/230028 | |
| dc.subject | Quantum Physics | |
| dc.title | Entanglement Measures for Intermediate Separability of Quantum States | |
| dc.type | text |