Entanglement purification via separable superoperators
| dc.creator | Rains, Eric M. | |
| dc.date | 1997-07-01 | |
| dc.date | 1998-04-23 | |
| dc.date.accessioned | 2026-07-07T09:05:14Z | |
| dc.date.available | 2026-07-07T09:05:14Z | |
| dc.description | One of the fundamental concepts of quantum information theory is that of entanglement purification; that is, the transformation of a partially entangled state into a smaller-dimensional, more completely entangled state. Of particular interest are protocols for entanglement purification (EPPs) that alternate purely local operations with one- or two-way classical communication. In the present work, we consider a more general, but simpler, class of transformations, called separable superoperators. Since every EPP is a separable superoperator, bounds on separable superoperators apply as well to EPPs; we use this fact to give a new upper bound on the rate of EPPs on Bell-diagonal states, and thus on the capacity of Bell-diagonal channels. | |
| dc.description | 4 pages, RevTeX, one EPS figure, revised for greater clarity, and to add references to new work. Revised 4/23/98 to fix a serious systematic typo | |
| dc.identifier | https://arxiv.org/abs/quant-ph/9707002 | |
| dc.identifier | http://arxiv.org/abs/quant-ph/9707002 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/149644 | |
| dc.subject | Quantum Physics | |
| dc.title | Entanglement purification via separable superoperators | |
| dc.type | text |