Entanglement Protection of Two-Qubit System in Non-Markovian Reservoir via Weak Measurement and Weak Measurement Reversal

GUO Xiuli; ZHANG Yanliang; KANG Guodong; ZHOU Qingping

doi:10.1049/cje.2018.06.004

Volume 28 Issue 3

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Article Navigation > Chinese Journal of Electronics > 2019 > 28(3): 593-597

GUO Xiuli, ZHANG Yanliang, KANG Guodong, et al., “Entanglement Protection of Two-Qubit System in Non-Markovian Reservoir via Weak Measurement and Weak Measurement Reversal,” Chinese Journal of Electronics, vol. 28, no. 3, pp. 593-597, 2019, doi: 10.1049/cje.2018.06.004

Citation:

GUO Xiuli, ZHANG Yanliang, KANG Guodong, et al., “Entanglement Protection of Two-Qubit System in Non-Markovian Reservoir via Weak Measurement and Weak Measurement Reversal,” Chinese Journal of Electronics, vol. 28, no. 3, pp. 593-597, 2019, doi: 10.1049/cje.2018.06.004

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Entanglement Protection of Two-Qubit System in Non-Markovian Reservoir via Weak Measurement and Weak Measurement Reversal

doi: 10.1049/cje.2018.06.004

1.
School of Physics and Mechanical and Electrical Engineering, Jishou University, Jishou 416000, China;
2.
School of Software and Service Outsourcing, Jishou University, Zhangjiajie 427000, China

Funds: This work is supported by the National Natural Science Foundation of China (No.11464015), the Provincial Natural Science Foundation of Hunan (No.14jj6035), and Education Department Outstanding Young Project of Hunan (No.14B147).

More Information

Corresponding author: ZHOU Qingping (corresponding author) was born in Hunan Province, China, in 1965. He was the post doctoral researcher from the College of Physics and Information Science, Hunan Normal University, China, in 2005. Currently he is a professor in College of Physical and Mechanical and Electrical engineering of Jishou University. His research interests include quantum computation and quantum information. He has been conducting research on controlling of quantum entanglement and quantum information processing within atomic and optoelectronic systems for many years. (Email:qingpingzhou@163.com)
Received Date: 2017-08-02
Publish Date: 2019-05-10

Abstract

Abstract

The protection schemes of the entanglement in the system of two entangled atoms from nonMarkovian reservoirs via previous Weak measurement (pre-WM) and posterior Weak measurement reversal (post-WMR) are investigated. We firstly compare the effects of combination applying of pre-WM and post-WMR (scheme 1) and twice Weak measurements (WMs) (scheme 2) in the condition of different initial entangled states. The analysis indicates that the protection performance of scheme 1 is much better than that of scheme 2. The scheme 1 was utilized when the system of two entangled atoms suffers from the independent reservoirs. The numerical results show that the combination of pre-WM and postWMR can effectively enhance entanglement and shorten the time of Entanglement sudden death (ESD) in nonMakovain environment. We have found the optimum of WM strengthens is drastically related to the initial entangled state.
- Entanglement protection,
- Weak measurement,
- Weak measurement reversal,
- Non-Makovain environment

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References(22)

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