dorsal/arxiv
View SchemaBound entangled states with nonzero distillable key rate
| Authors | Dong Pyo Chi, Jeong Woon Choi, Jeong San Kim, Taewan Kim, Soojoon Lee |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0612225 |
| URL | https://arxiv.org/abs/quant-ph/0612225 |
| DOI | 10.1103/PhysRevA.75.032306 |
Abstract
In this paper, we present sufficient conditions for states to have positive distillable key rate. Exploiting the conditions, we show that the bound entangled states given by Horodecki et al. [Phys. Rev. Lett. 94, 160502 (2005), quant-ph/0506203] have nonzero distillable key rate, and finally exhibit a new class of bound entangled states with positive distillable key rate, but with negative Devetak-Winter lower bound of distillable key rate for the ccq states of their privacy squeezed versions.
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"abstract": "In this paper, we present sufficient conditions for states to have positive\ndistillable key rate. Exploiting the conditions, we show that the bound\nentangled states given by Horodecki et al. [Phys. Rev. Lett. 94, 160502 (2005),\nquant-ph/0506203] have nonzero distillable key rate, and finally exhibit a new\nclass of bound entangled states with positive distillable key rate, but with\nnegative Devetak-Winter lower bound of distillable key rate for the ccq states\nof their privacy squeezed versions.",
"arxiv_id": "quant-ph/0612225",
"authors": [
"Dong Pyo Chi",
"Jeong Woon Choi",
"Jeong San Kim",
"Taewan Kim",
"Soojoon Lee"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevA.75.032306",
"title": "Bound entangled states with nonzero distillable key rate",
"url": "https://arxiv.org/abs/quant-ph/0612225"
},
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