期刊
JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL
卷 34, 期 47, 页码 10327-10332出版社
IOP PUBLISHING LTD
DOI: 10.1088/0305-4470/34/47/329
关键词
-
In this paper we investigate two different entanglement measures in the case of mixed states of two qubits. We prove that the negativity of a state can never exceed its concurrence and is always larger than root (1 - C)(2) + C-2 - (1 - C), where C is the concurrence of the state. Furthermore, we derive an explicit expression for the states for which the upper or lower bound is satisfied. Finally we show that similar results hold if the relative entropy of entanglement and the entanglement of formation are compared.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据