Share Email Print
cover

Proceedings Paper

Efficient quantum key distribution based on pulse-position modulation
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

Pulse-position modulation (PPM) is a promising technique that can be used to improve the efficiency of quantum key distribution (QKD) based on a Poisson photon source. In this paper, we first investigate a simple entanglement-and- PPM-based QKD protocol and demonstrate the improvement in secret key rate. However, such a PPM-based QKD protocol that utilizes only frames with a single click is still inefficient because it ignores frames with two and more clicks. For this reason we propose to use such multi-click frames to further improve the efficiency of PPM-based QKD by employing a better sifting strategy. Specifically, we focus on using the frames with two clicks in addition to those with a single click. Finally, we analyze the secret key rate under various noise levels in the scenario of high channel loss, which has been faced by most QKD applications. With the analytical results, we show the advantage of the proposed PPM-based QKD.

Paper Details

Date Published: 13 October 2014
PDF: 7 pages
Proc. SPIE 9254, Emerging Technologies in Security and Defence II; and Quantum-Physics-based Information Security III, 92540C (13 October 2014); doi: 10.1117/12.2067135
Show Author Affiliations
Yequn Zhang, The Univ. of Arizona (United States)
Ivan B. Djordjevic, The Univ. of Arizona (United States)
Mark A. Neifeld, The Univ. of Arizona (United States)


Published in SPIE Proceedings Vol. 9254:
Emerging Technologies in Security and Defence II; and Quantum-Physics-based Information Security III
Keith L. Lewis; Richard C. Hollins; Thomas J. Merlet; Alexander Toet; Mark T. Gruneisen; Miloslav Dusek; John G. Rarity, Editor(s)

© SPIE. Terms of Use
Back to Top