Quantum entanglement in the background of cosmic string spacetime

Quantum entanglement in the background of cosmic string spacetime
复制标题

宇宙弦时空背景下的量子纠缠

DOI:
10.1007/s11128-020-02796-1
复制
发表时间:
2020-08
影响因子:
2.5
通讯作者:
Zhimin He
Zhimin He
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Zhiming Huang;Zhimin He

文献摘要

参考文献

相似文献

我们研究了耦合到宇宙弦时空中无质量标量场的两个静态原子的纠缠行为。针对最初在维尔纳态下制备的两个原子的不同情况计算了纠缠度量。研究发现,纠缠行为取决于真空涨落、两原子距离和非平凡时空拓扑。当亏角参数时,演化模型简化为Minkowski时空演化模型。当两个原子距离足够小时,可以在一定程度上保持纠缠免受真空涨落的影响。大的赤字角参数会加速纠缠的破坏,缩短纠缠的寿命。随着原子弦距离的变化,纠缠呈现出轻微的振荡行为。大的原子弦距离可以延缓纠缠衰减并延长纠缠的整体寿命。我们的探索可能有助于从原理上感知宇宙弦时空拓扑结构和性质。
We examine the entanglement behaviors for two static atoms coupled to a massless scalar field in the cosmic string spacetime. The entanglement measure is calculated for different cases for two atoms initially prepared in the Werner state. It is found that entanglement behaviors depend on vacuum fluctuation, two-atom distance and nontrivial spacetime topology. When deficit angle parameter, the evolution model reduces to that of Minkowski spacetime. When two-atom distance is sufficiently small, entanglement can be preserved from the impact of vacuum fluctuation to some extent. Large deficit angle parameter can accelerate destruction of entanglement and shorten lifetime of entanglement. Entanglement presents slight oscillating behavior as atom–string distance varies. A large atom–string distance can retard the entanglement decay and extend entanglement lifetime as a whole. Our exploration may be useful to sense the cosmic string spacetime topology structure and property in principle.
宇宙弦时空中两个纠缠原子的辐射过程
DOI: 10.1088/1361-6382/aa9d49
发表时间: 2018-01-25
影响因子: 3.5
作者:
Cai, Huabing;Ren, Zhongzhou
通讯作者: Ren, Zhongzhou
DOI: 10.1145/505482.505499
发表时间: 2001-07
期刊: ACM SIGSOFT Softw. Eng. Notes
影响因子: --
作者:
Jim Law
通讯作者: Jim Law
DOI: --
发表时间: 2019
期刊: --
影响因子: --
作者:
Wan Cong;Erickson Tjoa;R. Mann
通讯作者: Wan Cong;Erickson Tjoa;R. Mann
DOI: 10.1016/j.physletb.2012.06.009
发表时间: 2011-12
期刊: Physics Letters B
影响因子: 4.4
作者:
A. Saharian;A. Kotanjyan
通讯作者: A. Saharian;A. Kotanjyan
DOI: 10.1103/physrevd.93.084028
发表时间: 2016-04
期刊: Physical Review D - Particles, Fields, Gravitation and Cosmology
影响因子: --
作者:
Wenting Zhou;Hongwei Yu
通讯作者: Hongwei Yu