arXivDaily arXiv每日学术速递 周一至周五更新
arXiv quant-ph/0212030quant-ph
收藏

多体量子态纠缠的几何度量

Geometric measure of entanglement for multipartite quantum states

Tzu-Chieh Wei, Paul M. Goldbart

摘要:

纯量子态纠缠的程度可以用到最近的非纠缠态的距离或角度来表征。这种纠缠的几何度量,已经存在于许多设置中[A。Shimony,Ann. Acad. Sci. 755,p.675(1995)和H. Barnum和N. Linden,J.Phys.A:Math.Gen.34,p.6787(2001)],探讨了二分和多分纯态和混合态。对任意两量子比特混合态和广义Werner态及各向同性态,它是确定的,也适用于某些多体混合态。

英文摘要:

The degree to which a pure quantum state is entangled can be characterized by the distance or angle to the nearest unentangled state. This geometric measure of entanglement, already present in a number of settings [A. Shimony, Ann. NY. Acad. Sci. 755, p.675 (1995) and H. Barnum and N. Linden, J. Phys. A: Math. Gen. 34, p.6787 (2001)], is explored for bipartite and multipartite pure and mixed states. It is determined for arbitrary two-qubit mixed states and for generalized Werner and isotropic states, and is also applied to certain multipartite mixed states.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑