两量子比特 X 态的几何全局量子失谐
量子物理
2016-03-23 v2
摘要
Xu [Jianwei Xu, J. Phys. A: Math. Theor. 45 405304 (2012)] 将几何量子失谐 [B.Dakic, V. Vedral, and C . Brukner, Phys. Rev. Lett. 105 190502 (2010)] 推广至多体态，并提出了几何全局量子失谐。在本文中，我们首先分别推导了两量子比特 X 态的几何全局量子失谐和几何量子失谐的解析公式。其次，我们给出了五个具体示例以演示我们公式的应用。最后，我们证明了几何量子失谐是几何全局量子失谐的一个紧下界。
引用
@article{arxiv.1406.1964,
title = {Geometric global quantum discord of two-qubit X states},
author = {Wen-Chao Qiang and Hua-Ping Zhanga and Lei Zhang},
journal= {arXiv preprint arXiv:1406.1964},
year = {2016}
}
备注
1. We pointed out that the geometric global quantum discord and the total quantum correlations are identical; 2. We have added references [14] and [45]; 3. we have corectted some English spelling and writing