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
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Pham, Anh
6890a9a8-c8c8-4bb6-86da-7962d2c1daf7
9 February 2017
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
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
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Date deposited: 07 Jan 2017 11:16
Last modified: 16 Mar 2024 02:59
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Contributors
Author:
Phuc Trinh
Author:
Thanh Pham
Author:
Hung Nguyen
Author:
Soon Xin Ng
Author:
Anh Pham
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