Continuous-variable entanglement sharing in noninertial frames
Continuous-variable entanglement sharing in noninertial frames
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DOI：
10.1103/physreva.76.062112
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发表时间：
2007-12-01
影响因子：
2.9
通讯作者：
Ericsson, Marie
中科院分区：
文献类型：
--
作者：
Adesso, Gerardo;Fuentes-Schuller, Ivette;Ericsson, Marie
从匀加速状态下观测者的角度研究了自由标量场模间纠缠的分布。从惯性的角度考虑双模压缩态的光场，并分析研究了在一个或两个观测者均为匀加速的情况下，由于Unruh效应而引起的纠缠退化.我们发现，对于两个观察员进行有限的加速，纠缠消失之间的最低频率模式。从非惯性的角度，纠缠的丢失被精确地解释为惯性纠缠重新分配为可达和不可达模式之间的多体量子关联。我们表明，经典的相关性也失去了从两个加速观察员的角度来看，但保守的，如果观察员之一仍然惯性。
We study the distribution of entanglement between modes of a free scalar field from the perspective of observers in uniform acceleration. We consider a two-mode squeezed state of the field from an inertial perspective, and analytically study the degradation of entanglement due to the Unruh effect, in the cases of either one or both observers undergoing uniform acceleration. We find that, for two observers undergoing finite acceleration, the entanglement vanishes between the lowest-frequency modes. The loss of entanglement is precisely explained as a redistribution of the inertial entanglement into multipartite quantum correlations among accessible and inaccessible modes from a noninertial perspective. We show that classical correlations are also lost from the perspective of two accelerated observers but conserved if one of the observers remains inertial.