Research on Entanglement Degradation Model in Quantum Communication of Power System

doi:10.11930/j.issn.1004-9649.201806022

Electric Power ›› 2019, Vol. 52 ›› Issue (7): 1-5,16.DOI: 10.11930/j.issn.1004-9649.201806022

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Research on Entanglement Degradation Model in Quantum Communication of Power System

LI Wei¹, CHEN Lu¹, LIU Shaojun¹, FENG Bao^2,3, ZHAO Xinjian¹, YAN Dong¹

1. State Grid Nanjing Power Supply Company, Nanjing 210024, China;
2. NARI Group Corporation/State Grid Electric Power Research Institute, Nanjing 211106, China;
3. NRGD Quantum Technology Co., Ltd., Nanjing 211106, China

Received:2018-06-22 Revised:2019-01-29 Online:2019-07-05 Published:2019-07-13
Supported by:
This work is supported by Science and Technology Project of State Grid Jiangsu Power Co., Ltd. (Application of Quantum Secret Communication Technology in Power System Business, No.J2018061).

Abstract

Abstract: Entangled states are the core resources and the information carriers in private quantum communication technology. How to guarantee the entanglement of two-photon states is one of the main problems in quantum private communication. This paper studies the model of quantum entanglement degradation caused by ambient noise in quantum private communication technology based on single mode optical fibers, especially the noise of overhead power optical cables in the harsh environment. The transverse and longitudinal decoherence effects of quantum entanglement induced by ambient noise are discussed respectively from the anisotropy of refractive index and absorption coefficient. The research results will provide a reference for the application of entanglement-based quantum private communication in power system and other harsh electromagnetic environment.

Key words: power scenario, environment disturbance, quantum private communication, entangled state, entanglement degradation, information physics system

CLC Number:

TM73

LI Wei, CHEN Lu, LIU Shaojun, FENG Bao, ZHAO Xinjian, YAN Dong. Research on Entanglement Degradation Model in Quantum Communication of Power System[J]. Electric Power, 2019, 52(7): 1-5,16.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.201806022

https://www.electricpower.com.cn/EN/Y2019/V52/I7/1

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Research on Entanglement Degradation Model in Quantum Communication of Power System

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