The University of Southampton
University of Southampton Institutional Repository

Performance of free-space QKD systems using SIM/BPSK and dual-threshold/direct-detection

Performance of free-space QKD systems using SIM/BPSK and dual-threshold/direct-detection
Performance of free-space QKD systems using SIM/BPSK and dual-threshold/direct-detection
This paper proposes a novel free-space quantum key distribution (QKD) system using subcarrier intensity-modulation (SIM) binary phase-shift-keying (BPSK) and dual-threshold/direct-detection (DT/DD) receiver with an avalanche photodiode (APD). The proposed system enables the adoption of well-developed analytical models in conventional free-space optical (FSO) communications and achieves the QKD function with a simple configuration. We analytically investigate the design criteria for transmitter and receiver, in particular, the modulation depth and the setting for dual-threshold in the context of security requirement of QKD systems. The quantum bit error rate (QBER) and the ergodic secret-key rate of the proposed system are analytically derived in closed-form expressions, considering the channel loss, atmospheric turbulence modeled by the log-normal distribution, and receiver noises. Monte-Carlo (M-C) simulations are also implemented to validate the analytical results, and numerical results confirm the feasibility of the proposed system.
Trinh, Phuc
8d011edc-2c25-408f-8339-9318cb7bdbf9
Pham, Thanh
6ed1cbc6-f447-435d-9b0d-e27bb4f19aea
Nguyen, Hung
086ec465-fbca-42d1-88d2-5f8a25c9fc31
Ng, Soon Xin
e19a63b0-0f12-4591-ab5f-554820d5f78c
Pham, Anh
6890a9a8-c8c8-4bb6-86da-7962d2c1daf7
Trinh, Phuc
8d011edc-2c25-408f-8339-9318cb7bdbf9
Pham, Thanh
6ed1cbc6-f447-435d-9b0d-e27bb4f19aea
Nguyen, Hung
086ec465-fbca-42d1-88d2-5f8a25c9fc31
Ng, Soon Xin
e19a63b0-0f12-4591-ab5f-554820d5f78c
Pham, Anh
6890a9a8-c8c8-4bb6-86da-7962d2c1daf7

Trinh, Phuc, Pham, Thanh, Nguyen, Hung, Ng, Soon Xin and Pham, Anh (2017) Performance of free-space QKD systems using SIM/BPSK and dual-threshold/direct-detection. IEEE Globecom 2016, Washington, United States. 04 - 08 Dec 2016. 6 pp . (doi:10.1109/GLOCOMW.2016.7848999).

Record type: Conference or Workshop Item (Paper)

Abstract

This paper proposes a novel free-space quantum key distribution (QKD) system using subcarrier intensity-modulation (SIM) binary phase-shift-keying (BPSK) and dual-threshold/direct-detection (DT/DD) receiver with an avalanche photodiode (APD). The proposed system enables the adoption of well-developed analytical models in conventional free-space optical (FSO) communications and achieves the QKD function with a simple configuration. We analytically investigate the design criteria for transmitter and receiver, in particular, the modulation depth and the setting for dual-threshold in the context of security requirement of QKD systems. The quantum bit error rate (QBER) and the ergodic secret-key rate of the proposed system are analytically derived in closed-form expressions, considering the channel loss, atmospheric turbulence modeled by the log-normal distribution, and receiver noises. Monte-Carlo (M-C) simulations are also implemented to validate the analytical results, and numerical results confirm the feasibility of the proposed system.

Text
gc16-qkd.pdf - Accepted Manuscript
Download (933kB)

More information

Accepted/In Press date: 20 August 2016
e-pub ahead of print date: 9 February 2017
Published date: 9 February 2017
Venue - Dates: IEEE Globecom 2016, Washington, United States, 2016-12-04 - 2016-12-08
Organisations: Southampton Wireless Group

Identifiers

Local EPrints ID: 404421
URI: http://eprints.soton.ac.uk/id/eprint/404421
PURE UUID: 69489c86-687d-43bd-8b6e-1a0fb235a44b
ORCID for Soon Xin Ng: ORCID iD orcid.org/0000-0002-0930-7194

Catalogue record

Date deposited: 07 Jan 2017 11:16
Last modified: 07 Oct 2020 05:52

Export record

Altmetrics

Contributors

Author: Phuc Trinh
Author: Thanh Pham
Author: Hung Nguyen
Author: Soon Xin Ng ORCID iD
Author: Anh Pham

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×