Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Passive decoy-state quantum key distribution with the SARG04 protocol

Not Accessible

Your library or personal account may give you access

Abstract

We present a new scheme for realizing passive decoy-state quantum key distribution with the SARG04 protocol. It is based on parametric down-conversion sources, and we do not need to modulate the pumping light into different intensities. By applying local-mode-splitting detections on Alice’s side, legitimate users can obtain four different kinds of counting events on Bob’s side, due to intrinsic correlations between photon pairs from parametric down-conversion processes. In the new scheme, we do not need to modulate signal pulses into different intensities and can, thus, avoid introducing any intensity modulating uncertainty. As a result, quite precise estimations of single- or multi-photon-pulse contributions can be obtained, enabling better performance of the key generation rate and transmission distance compared with other existing SARG04 protocols, e.g., the four-intensity decoy-state method using either parametric down-conversion sources or weak coherent sources. Besides, through comparisons, we also find that the proposed new passive decoy-state SARG04 protocol can also show some superiority over the conventional three-intensity decoy-state BB84 protocol at long transmission distances under certain experimental conditions.

© 2018 Optical Society of America

Full Article  |  PDF Article
More Like This
Proof-of-principle demonstration of parametric down-conversion source-based quantum key distribution over 40 dB channel loss

Chun-Hui Zhang, Dong Wang, Xing-Yu Zhou, Shuang Wang, La-Bao Zhang, Zhen-Qiang Yin, Wei Chen, Zheng-Fu Han, Guang-Can Guo, and Qin Wang
Opt. Express 26(20) 25921-25933 (2018)

Decoy-state method for subcarrier-multiplexed frequency-coded quantum key distribution

Sudeshna Bhattacharya and Pradeep Kumar Krishnamurthy
J. Opt. Soc. Am. B 30(4) 782-787 (2013)

Detector-decoy high-dimensional quantum key distribution

Haize Bao, Wansu Bao, Yang Wang, Ruike Chen, Chun Zhou, Musheng Jiang, and Hongwei Li
Opt. Express 24(19) 22159-22168 (2016)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (5)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (2)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (20)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved