Analysis of polarization coding for subcarrier multiplexing quantum key distribution

Joint Event on 3^rd International Conference on Nuclear and Plasma Physics & 4^th International Conference on Quantum Physics and Quantum Technology

November 05-06, 2018 | London, UK

Hailin Xiao

Guilin University of Electronic Technology, China

Posters & Accepted Abstracts: J Astrophys Aerospace Technol

Abstract :

A polarization coding scheme for subcarrier multiplexing quantum key distribution (SCM-QKD) is proposed, in which the overall quantum key distribution (QKD) can be substantially increased by relying on parallel sideband channels. The polarization state of each sideband can be randomly and independently synthesized by controlling the phase difference of subcarriers. We derive the performance analysis formulas for the achievable quantum bit-error rate (QBER). Both the theoretical analysis and the numerical results show that an efficient implementation of BB84 protocol is feasible. By the proposed polarization coding in a parallel QKD system, without relying on dispersion compensation, a 6% performance gain in terms of correct-bit rate over the conventional BB84 protocol (i.e. without polarization coding) is obtained. Moreover, the proposed polarization coding aided SCM-QKD can help achieve a long-distance QKD with a low QBER.

Biography :

E-mail: xhl_xiaohailin@163.com