期刊
QUANTUM INFORMATION PROCESSING
卷 16, 期 5, 页码 -出版社
SPRINGER
DOI: 10.1007/s11128-017-1568-0
关键词
Quantum entanglement; Separability; Multiparticle pure states; Lagrange's identity; Wedge product
资金
- National Initiative on Undergraduate Science (NIUS)
Concurrence, introduced by Hill and Wootters (Phys Rev Lett 78:5022, 1997), provides an important measure of entanglement for a general pair of qubits that is faithful: strictly positive for entangled states and vanishing for all separable states. Such a measure captures the entire content of entanglement, providing necessary and sufficient conditions for separability. We present an extension of concurrence to multiparticle pure states in arbitrary dimensions by a new framework using the Lagrange's identity and wedge product representation of separability conditions, which coincides with the I-concurrence of Rungta et al. (Phys RevA64:042315, 2001) who proposed by extendingWootters's spin-flip operator to a so-called universal inverter superoperator. Our framework exposes an inherent geometry of entanglement and may be useful for the further extensions to mixed and continuous variable states.
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