通过局域可观测量关联探测宏观纠缠
量子物理
2016-10-24 v3 超导电性
原子物理
摘要
我们提出对宏观量子系统中多格点局域可观测量的一种关联。通过测量该关联，可以探测任意（有效）均匀量子态中是否存在宏观可区分态的叠加——我们称之为宏观纠缠。利用此性质，我们还提出了一种宏观纠缠的指征。
引用
@article{arxiv.quant-ph/0504086,
title = {Detection of Macroscopic Entanglement by Correlation of Local Observables},
author = {Akira Shimizu and Tomoyuki Morimae},
journal= {arXiv preprint arXiv:quant-ph/0504086},
year = {2016}
}
备注
Although the index q was proposed for mixed states, it is also applicable to pure states, on which we fix minor bugs (that will be reported in PRL as erratum). The conclusions of the paper remain unchanged. (4 pages, no figures.)