Sudden death of distillability in qutrit-qutrit systems
Quantum Physics
2009-08-01 v2
Abstract
We introduce the concept of distillability sudden death, i.e., free entangled states can evolve into non-distillable (bound entangled or separable) states in finite time under local noise. We describe the phenomenon through a specific model of local dephasing noise and compare the behavior of states in terms of the Bures fidelity. Then we propose a few methods to avoid distillability sudden death of states under (general) local dephasing noise, so that free entangled states can be robust against decoherence. Moreover, we find that bound entangled states are unstable in the limit of infinite time.
Keywords
Cite
@article{arxiv.0904.4847,
title = {Sudden death of distillability in qutrit-qutrit systems},
author = {Wei Song and Lin Chen and Shi-Liang Zhu},
journal= {arXiv preprint arXiv:0904.4847},
year = {2009}
}
Comments
published version, small changes in Sec.III, 6 pages, 3 figures