Limits on sequential sharing of nonlocal advantage of quantum coherence

被引:0
|
作者
Ming-Liang Hu [1 ]
Jia-Ru Wang [1 ]
Heng Fan [2 ,3 ,4 ]
机构
[1] School of Science, Xi'an University of Posts and Telecommunications
[2] Songshan Lake Materials Laboratory
[3] Institute of Physics, Chinese Academy of Sciences
[4] CAS Center for Excellence in Topological Quantum Computation, University of Chinese Academy of Sciences
基金
中国国家自然科学基金; 北京市自然科学基金;
关键词
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暂无
中图分类号
O413 [量子论];
学科分类号
070201 ;
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×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.
引用
收藏
页码:30 / 39
页数:10
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