Symmetric extension of two-qubit states
文献类型：期刊论文
| 作者 | Chen, Jianxin (1) ; Ji, Zhengfeng (2) ; Kribs, David (1) ; Ltkenhaus, Norbert (2) ; Zeng, Bei (1) |
| 刊名 | Physical Review A - Atomic, Molecular, and Optical Physics
 |
| 出版日期 | 2014 |
| 卷号 | 90期号:3 |
| ISSN号 | 10502947 |
| 通讯作者 | Chen, Jianxin |
| 中文摘要 | A bipartite state ρAB is symmetric extendible if there exists a tripartite state ρABB′ whose AB and AB′ marginal states are both identical to ρAB. Symmetric extendibility of bipartite states is of vital importance in quantum information because of its central role in separability tests, one-way distillation of Einstein-Podolsky-Rosen pairs, one-way distillation of secure keys, quantum marginal problems, and antidegradable quantum channels. We establish a simple analytic characterization for symmetric extendibility of any two-qubit quantum state ρAB; specifically, tr(ρB2)≥tr(ρAB2)-4detρAB. As a special case we solve the bosonic three-representability problem for the two-body reduced density matrix. |
| 英文摘要 | A bipartite state ρAB is symmetric extendible if there exists a tripartite state ρABB′ whose AB and AB′ marginal states are both identical to ρAB. Symmetric extendibility of bipartite states is of vital importance in quantum information because of its central role in separability tests, one-way distillation of Einstein-Podolsky-Rosen pairs, one-way distillation of secure keys, quantum marginal problems, and antidegradable quantum channels. We establish a simple analytic characterization for symmetric extendibility of any two-qubit quantum state ρAB; specifically, tr(ρB2)≥tr(ρAB2)-4detρAB. As a special case we solve the bosonic three-representability problem for the two-body reduced density matrix. |
| 收录类别 | SCI ; EI |
| 语种 | 英语 |
| WOS记录号 | WOS:000342126600004 |
| 公开日期 | 2014-12-16 |
| 源URL | [http://ir.iscas.ac.cn/handle/311060/16820]  |
| 专题 | 软件研究所_软件所图书馆_期刊论文 |
| 推荐引用方式 GB/T 7714 | Chen, Jianxin ,Ji, Zhengfeng ,Kribs, David ,et al. Symmetric extension of two-qubit states[J]. Physical Review A - Atomic, Molecular, and Optical Physics,2014,90(3). |
| APA | Chen, Jianxin ,Ji, Zhengfeng ,Kribs, David ,Ltkenhaus, Norbert ,&Zeng, Bei .(2014).Symmetric extension of two-qubit states.Physical Review A - Atomic, Molecular, and Optical Physics,90(3). |
| MLA | Chen, Jianxin ,et al."Symmetric extension of two-qubit states".Physical Review A - Atomic, Molecular, and Optical Physics 90.3(2014). |
入库方式： OAI收割
来源：软件研究所
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