Relay-assisted quantum-key distribution over long atmospheric channels

Majid Safari; Murat Uysal

doi:10.1109/JLT.2009.2024554

Relay-assisted quantum-key distribution over long atmospheric channels

Majid Safari, Murat Uysal

Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

In this paper, we investigate a terrestrial relay-assisted scheme for a free-space quantum key distribution (QKD) system based on BB84 protocol. We consider the deployment of passive relays which simply redirect the qubits to the next relay node or to the receiver without performing any measurement or detection process. Based on a near-field analysis, we derive an upper bound on quantum bit error rate (QBER) of the relay-assisted QKD system. Our results demonstrate that the relay-assisted scheme is able to outperform point-to-point direct transmission for long link ranges in which turbulence effects are particularly degrading.

Original language	English (US)
Pages (from-to)	4508-4515
Number of pages	8
Journal	Journal of Lightwave Technology
Volume	27
Issue number	20
DOIs	https://doi.org/10.1109/JLT.2009.2024554
State	Published - Oct 15 2009

Keywords

Free-space optics
Quantum-key distribution
Relay-assisted systems

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

Access to Document

10.1109/JLT.2009.2024554

Cite this

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title = "Relay-assisted quantum-key distribution over long atmospheric channels",

abstract = "In this paper, we investigate a terrestrial relay-assisted scheme for a free-space quantum key distribution (QKD) system based on BB84 protocol. We consider the deployment of passive relays which simply redirect the qubits to the next relay node or to the receiver without performing any measurement or detection process. Based on a near-field analysis, we derive an upper bound on quantum bit error rate (QBER) of the relay-assisted QKD system. Our results demonstrate that the relay-assisted scheme is able to outperform point-to-point direct transmission for long link ranges in which turbulence effects are particularly degrading.",

keywords = "Free-space optics, Quantum-key distribution, Relay-assisted systems",

author = "Majid Safari and Murat Uysal",

note = "Funding Information: Manuscript received January 25, 2009; revised May 10, 2009. First published June 05, 2009; current version published August 28, 2009. The work of M. Uysal was supported in part by the Natural Sciences and Engineering Research Council of Canada (NSERC) Strategic Project under Grant STPSC356750.",

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N2 - In this paper, we investigate a terrestrial relay-assisted scheme for a free-space quantum key distribution (QKD) system based on BB84 protocol. We consider the deployment of passive relays which simply redirect the qubits to the next relay node or to the receiver without performing any measurement or detection process. Based on a near-field analysis, we derive an upper bound on quantum bit error rate (QBER) of the relay-assisted QKD system. Our results demonstrate that the relay-assisted scheme is able to outperform point-to-point direct transmission for long link ranges in which turbulence effects are particularly degrading.

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Relay-assisted quantum-key distribution over long atmospheric channels

Abstract

Keywords

ASJC Scopus subject areas

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