Performance analysis of free space quantum key distribution with different wavelengths

Tao Liu; Cong Zhu; Chunyang Sun; Xinxin Fang; Pingping Wang

doi:10.1117/12.2543133

18 December 2019 Performance analysis of free space quantum key distribution with different wavelengths

Tao Liu, Cong Zhu, Chunyang Sun, Xinxin Fang, Pingping Wang

Proceedings Volume 11339, AOPC 2019: Quantum Information Technology; 1133909 (2019) https://doi.org/10.1117/12.2543133
Event: Applied Optics and Photonics China (AOPC2019), 2019, Beijing, China

Abstract

In the free-space quantum communication, the performance of communication systems has a great degradation due to the atmospheric effects, such as atmospheric absorption, scattering and turbulence. However, quantum signals with different wavelengths is differently affected by atmospheric characteristics. In this paper, in order to investigate the effects of different wavelengths quantum signals on free-space quantum key distribution, an entanglement-based continuous variable quantum key distribution transmission model is established. Considering the influence of various atmospheric effects on quantum signals, the secret key generation rates are calculated though the homodyne detectors. The simulation results show that the long-wavelength signal can enhance the secret key generation rates at the same transmission distance. Therefore, the long-wavelength signal is more suitable for the free-space quantum transmission.

Citation Download Citation

Tao Liu, Cong Zhu, Chunyang Sun, Xinxin Fang, and Pingping Wang "Performance analysis of free space quantum key distribution with different wavelengths", Proc. SPIE 11339, AOPC 2019: Quantum Information Technology, 1133909 (18 December 2019); https://doi.org/10.1117/12.2543133

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available