arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2201.13026quant-ph
收藏

量子相干性非定域优势序列共享的极限

Limits on sequential sharing of nonlocal advantage of quantum coherence

Ming-Liang Hu, Jia-Ru Wang, Heng Fan

摘要:

非局部相关的顺序共享与其应用有着内在的联系。我们解决的问题,有多少观察员可以分享非本地优势的量子相干性(NAQC)在$(d\times d)$维状态,其中$d$是一个素数或一个素数的幂。我们首先分析了一般$d$维非锐化测量的干扰和信息增益之间的权衡。然后,在一个场景中,多个爱丽丝执行unsharp测量的状态顺序和独立的一方和一个单一的鲍勃措施的相干性的条件状态的另一方,我们表明,在最多一个爱丽丝可以证明NAQC与鲍勃。即使在考虑具有最佳指针状态的弱测量时,该限制也成立。这些结果可能揭示高维系统的非定域关联和量子测量之间的相互作用以及不同量子关联的层次。

英文摘要:

Sequential sharing of nonlocal correlation is inherently related to its application. We address the question as to how many observers can share the nonlocal advantage of quantum coherence (NAQC) in a $(d\times d)$-dimensional state, where $d$ is a prime or a power of a prime. We first analyze the trade-off between disturbance and information gain of the general $d$-dimensional unsharp measurements. Then in a scenario where multiple Alices perform unsharp measurements on one party of the state sequentially and independently and a single Bob measures coherence of the conditional states on the other party, we show that at most one Alice can demonstrate NAQC with Bob. This limit holds even when considering the weak measurements with optimal pointer states. These results may shed light on the interplay between nonlocal correlations and quantum measurements on high-dimensional systems and the hierarchy of different quantum correlations.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑