Entanglement measures: state ordering vs local operations
| Authors | |
|---|---|
| Year of publication | 2007 |
| Type | Chapter of a book |
| MU Faculty or unit | |
| Citation | |
| Description | A set of all states of a bi-partite quantum system can be divided into subsets each of which contains states with the same degree of entanglement. In this paper we address a question whether local operations (without classical communication) affect the entanglement-induced state ordering. We show that arbitrary unilocal channel (i.e., a channel that acts on one sub-system of a bi-partite system only) might change the ordering for an arbitrary nontrivial measure of entanglement. A slightly weaker result holds for the maximally entangled states. In particular, the maximally entangled states might not remain the most entangled ones at the output of a unilocal noise channel. |
| Related projects: |