Manipulating the measured uncertainty under Lee−Yang dephasing channels through local  PT-symmetric operations

doi:10.1007/s11467-023-1280-8

Frontiers of Physics

2023, Vol. 18

Issue (5): 51302 https://doi.org/10.1007/s11467-023-1280-8

本期目录

Manipulating the measured uncertainty under Lee−Yang dephasing channels through local

P T

-symmetric operations

Ling-Yu Yao, Li-Juan Li, Xue-Ke Song, Liu Ye, Dong Wang(

)

School of Physics and Optoelectronic Engineering, Anhui University, Hefei 230601, China

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Abstract：

Uncertainty relation lies at the heart of quantum physics, which is one of the fundamental characteristics of quantum mechanics. With the advent of quantum information theory, entropic uncertainty relation was proposed, which plays an important and irreplaceable role in quantum information science. In this work, we attempt to observe dynamics of entropic uncertainty in the presence of quantum memory under two different types of Lee−Yang dephasing channels. It is interesting to find that the dephasing channels have a negative effect on decreasing the uncertainty and the analogous partition function is anti-correlated with the uncertainty. In addition, we here propose an effective strategy to manipulate the uncertainty of interest of the subsystem by performing a parity-time symmetric ( $P T$ -symmetric) operation. It is worth noting that the uncertainty of measurement will be reduced to a certain extent by properly modulating the $P T$ -symmetric operations under the considered channels. In this sense, we argue that our explorations offer insight into dynamics of entropic uncertainty in typical Lee−Yang dephasing channels, and might be beneficial to quantum measurement estimation in practical quantum systems.

Key words： entropic uncertainty relation quantum correlation ${\color{[RGB]{12,108,100}}{{\cal {PT}}}} $-symmetric operation

收稿日期: 2023-01-02 出版日期: 2023-04-17

Corresponding Author(s): Dong Wang

引用本文:

. [J]. Frontiers of Physics, 2023, 18(5): 51302.
Ling-Yu Yao, Li-Juan Li, Xue-Ke Song, Liu Ye, Dong Wang. Manipulating the measured uncertainty under Lee−Yang dephasing channels through local

P T

-symmetric operations. Front. Phys. , 2023, 18(5): 51302.

链接本文:

https://academic.hep.com.cn/fop/CN/10.1007/s11467-023-1280-8
https://academic.hep.com.cn/fop/CN/Y2023/V18/I5/51302

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