Changes of quantum state of polarization in coexistence scheme of quantum-classical signal

Jun Wen Luo; Yun Xia Li; Lei Shi; Yang Xue

doi:10.1117/12.2283541

24 October 2017 Changes of quantum state of polarization in coexistence scheme of quantum-classical signal

Jun Wen Luo, Yun Xia Li, Lei Shi, Yang Xue

Proceedings Volume 10464, AOPC 2017: Fiber Optic Sensing and Optical Communications; 104640G (2017) https://doi.org/10.1117/12.2283541
Event: Applied Optics and Photonics China (AOPC2017), 2017, Beijing, China

Abstract

State of polarization(SOP) of single photon is the information carrier of polarization encoding BB84 protocol. SOP of quantum must be interrupted when quantum key distribution(QKD) propagates with classical signal in the same fiber. Coexistence schemes of quantum-classical signal based on two-channel and four-channel have been built respectively on Optisystem in this paper. The influence on SOP of quantum signal in BB84 protocol from different classical optical signal channel has been analyzed and compared by Stokes vector method and Poincare sphere method. SOP of 100 photons in QKD have been simulated. The results show that more channels will increase the bit error rate of QKD, and this paper has described the SOP changes well in coexistence scheme of quantum-classical signal based on wavelength division multiplexing.

Citation Download Citation

Jun Wen Luo, Yun Xia Li, Lei Shi, and Yang Xue "Changes of quantum state of polarization in coexistence scheme of quantum-classical signal", Proc. SPIE 10464, AOPC 2017: Fiber Optic Sensing and Optical Communications, 104640G (24 October 2017); https://doi.org/10.1117/12.2283541

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