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arXiv 1202.0939quant-ph
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量子不和谐在量子记忆下熵测不准关系下界降低中的作用

The role of quantum discord in reduction of the lower bound of entropic uncertainty relation in presence of quantum memory

T. Pramanik, S. Mal

摘要:

量子存储器的存在可以降低量子系统的测量不确定度[M. Berta et.等人,Nature Phys. { \bf 6},659(2010)]。通过对量子存储器的测量,某些信息(非经典信息)是不可获取的,从而限制了熵测不准关系的下限。本文通过考虑非经典关联在Bob侧的不可达性,改进了量子记忆下熵测不准关系的下界,并与M. Berta et.和我们对两种不同的共享的两部国家的处方。

英文摘要:

The uncertainty of measurement on a quantum system can be reduced in presence of quantum memory [M. Berta et. al. Nature Phys. {\bf 6}, 659 (2010)]. By measurement on quantum memory, some information (non-classical information) is inaccessible, hence, it limits the lower bound of entropic uncertainty relation. In the present work, we improve the lower bound of entropic uncertainty relation in presence of quantum memory by considering inaccessibility of non classical correlation at Bob side and also compare the lower bound given by M. Berta et. al. and our prescription for two different kind of shared bipartite state.

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。

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