Sudden death of entanglement: Classical noise effects

Sudden death of entanglement: Classical noise effects
复制标题

DOI:
10.1016/j.optcom.2006.01.061
复制
发表时间:
2006-02
影响因子:
2.4
通讯作者:
Ting Yu;J. Eberly
Ting Yu;J. Eberly
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Ting Yu;J. Eberly

文献摘要

被引文献

相似文献

当复合量子态与周围环境相互作用时,单个粒子的量子相干性和量子纠缠都会衰减。我们已经表明,在真空噪声下,即,在自发辐射过程中,两量子比特纠缠可能在有限时间内突然终止[T.余志辉<英>香港实业家。Eberly,Phys. Rev. Lett. 93(2004)140404],一种称为纠缠猝死(ESD)的现象。一个悬而未决的问题是混合态纠缠在经典噪声影响下的行为。在本文中,我们研究纠缠突然死亡,因为它引起的经典相位噪声的影响,两个量子比特,最初纠缠,但没有进一步的相互作用。
When a composite quantum state interacts with its surroundings, both quantum coherence of individual particles and quantum entanglement will decay. We have shown that under vacuum noise, i.e., during spontaneous emission, two-qubit entanglement may terminate abruptly in a finite time [T. Yu, J.H. Eberly, Phys. Rev. Lett. 93 (2004) 140404], a phenomenon termed entanglement sudden death (ESD). An open issue is the behavior of mixed-state entanglement under the influence of classical noise. In this paper we investigate entanglement sudden death as it arises from the influence of classical phase noise on two qubits that are initially entangled but have no further mutual interaction.