量子电子学报, 2017, 34 (1): 40, 网络出版: 2017-02-09
非惯性系下的多粒子纠缠态
Multipartite entanglement in noninertial frames
量子信息 非惯性系 三粒子纠缠态 互信息 保真度 quantum information non-inertial frames tripartite entanglement mutual-information fidelity
摘要
研究了三粒子纠缠随观测者加速的变化情况,发现纠缠随着加速度的增加而减少,当观测者 都加速时π-tangle减小最快。讨论了量子信息的分布,纠缠和互信息都会重新分布到物理上不可 到达的区域;相对论效应下的保真度随观测者加速度的增加而减少,一定程度上说明了纠缠和保真度是有关联的。
Abstract
The tripartite entanglement changing with the observer′s acceleration is investigated. It is found that the entanglement decreases with increasing of acceleration. π-tangle decreases most quickly when three observers are all accelerating. The distribution of quantum information is discussed. It’s found that the entanglement and mutual-information can be redistributed, and they can reach the physical inaccessible region. The fidelity under the relativistic effect decreases with increasing of the observer’s acceleration, which indicates that the entanglement and fidelity are related to a certain extent.
李军, 马雷. 非惯性系下的多粒子纠缠态[J]. 量子电子学报, 2017, 34(1): 40. LI Jun, MA Lei. Multipartite entanglement in noninertial frames[J]. Chinese Journal of Quantum Electronics, 2017, 34(1): 40.