纯纠缠态纠缠浓缩的性能与可逆性之间的权衡
量子物理
2013-10-01 v3
摘要
在量子信息理论中，人们普遍认为双部分纯态的纠缠浓缩是渐近可逆的。为了检验这一点，我们给出了该问题的精确表述，并展示了性能与可逆性之间的权衡关系，这暗示了纠缠浓缩的不可逆性。随后，我们将纠缠浓缩视为低维纠缠存储中的纠缠态压缩。由于纠缠浓缩的不可逆性，初始态在压缩过程后无法完全恢复，过程中不可避免地会产生损耗。我们对这种损耗进行了数值计算，并推导出了其高精度的解析近似。
引用
@article{arxiv.1305.6250,
title = {Trade-off between Performance and Reversibility of Entanglement Concentration for Pure Entangled State},
author = {Wataru Kumagai and Masahito Hayashi},
journal= {arXiv preprint arXiv:1305.6250},
year = {2013}
}
备注
10 pages, 5 figures. Harrow & Lo's paper and Hayden & Winter's paper were added in references and a relation between those papers and the paper was clarified. The title was changed