Two-dimensional distributed-phase-reference protocol for quantum key distribution

Davide Bacco, Jesper Bjerge Christensen, Mario A. Usuga Castaneda, Yunhong Ding, Søren Forchhammer, Karsten Rottwitt, Leif Katsuo Oxenløwe

Research output: Contribution to journalJournal articleResearchpeer-review

1971 Downloads (Pure)

Abstract

Quantum key distribution (QKD) and quantum communication enable the secure exchange of information between remote parties. Currently, the distributed-phase-reference (DPR) protocols, which are based on weak coherent pulses, are among the most practical solutions for long-range QKD. During the last 10 years, long-distance fiber-based DPR systems have been successfully demonstrated, although fundamental obstacles such as intrinsic channel losses limit their performance. Here, we introduce the first two-dimensional DPR-QKD protocol in which information is encoded in the time and phase of weak coherent pulses. The ability of extracting two bits of information per detection event, enables a higher secret key rate in specific realistic network scenarios. Moreover, despite the use of more dimensions, the proposed protocol remains simple, practical, and fully integrable.
Original languageEnglish
Article number36756
JournalScientific Reports
Volume6
Number of pages7
ISSN2045-2322
DOIs
Publication statusPublished - 2016

Cite this

@article{a8dcfd28aabe4c2383263c671543dde1,
title = "Two-dimensional distributed-phase-reference protocol for quantum key distribution",
abstract = "Quantum key distribution (QKD) and quantum communication enable the secure exchange of information between remote parties. Currently, the distributed-phase-reference (DPR) protocols, which are based on weak coherent pulses, are among the most practical solutions for long-range QKD. During the last 10 years, long-distance fiber-based DPR systems have been successfully demonstrated, although fundamental obstacles such as intrinsic channel losses limit their performance. Here, we introduce the first two-dimensional DPR-QKD protocol in which information is encoded in the time and phase of weak coherent pulses. The ability of extracting two bits of information per detection event, enables a higher secret key rate in specific realistic network scenarios. Moreover, despite the use of more dimensions, the proposed protocol remains simple, practical, and fully integrable.",
author = "Davide Bacco and Christensen, {Jesper Bjerge} and {Usuga Castaneda}, {Mario A.} and Yunhong Ding and S{\o}ren Forchhammer and Karsten Rottwitt and Oxenl{\o}we, {Leif Katsuo}",
year = "2016",
doi = "10.1038/srep36756",
language = "English",
volume = "6",
journal = "Scientific Reports",
issn = "2045-2322",
publisher = "Nature Publishing Group",

}

Two-dimensional distributed-phase-reference protocol for quantum key distribution. / Bacco, Davide; Christensen, Jesper Bjerge; Usuga Castaneda, Mario A.; Ding, Yunhong; Forchhammer, Søren; Rottwitt, Karsten; Oxenløwe, Leif Katsuo.

In: Scientific Reports, Vol. 6, 36756, 2016.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Two-dimensional distributed-phase-reference protocol for quantum key distribution

AU - Bacco, Davide

AU - Christensen, Jesper Bjerge

AU - Usuga Castaneda, Mario A.

AU - Ding, Yunhong

AU - Forchhammer, Søren

AU - Rottwitt, Karsten

AU - Oxenløwe, Leif Katsuo

PY - 2016

Y1 - 2016

N2 - Quantum key distribution (QKD) and quantum communication enable the secure exchange of information between remote parties. Currently, the distributed-phase-reference (DPR) protocols, which are based on weak coherent pulses, are among the most practical solutions for long-range QKD. During the last 10 years, long-distance fiber-based DPR systems have been successfully demonstrated, although fundamental obstacles such as intrinsic channel losses limit their performance. Here, we introduce the first two-dimensional DPR-QKD protocol in which information is encoded in the time and phase of weak coherent pulses. The ability of extracting two bits of information per detection event, enables a higher secret key rate in specific realistic network scenarios. Moreover, despite the use of more dimensions, the proposed protocol remains simple, practical, and fully integrable.

AB - Quantum key distribution (QKD) and quantum communication enable the secure exchange of information between remote parties. Currently, the distributed-phase-reference (DPR) protocols, which are based on weak coherent pulses, are among the most practical solutions for long-range QKD. During the last 10 years, long-distance fiber-based DPR systems have been successfully demonstrated, although fundamental obstacles such as intrinsic channel losses limit their performance. Here, we introduce the first two-dimensional DPR-QKD protocol in which information is encoded in the time and phase of weak coherent pulses. The ability of extracting two bits of information per detection event, enables a higher secret key rate in specific realistic network scenarios. Moreover, despite the use of more dimensions, the proposed protocol remains simple, practical, and fully integrable.

U2 - 10.1038/srep36756

DO - 10.1038/srep36756

M3 - Journal article

VL - 6

JO - Scientific Reports

JF - Scientific Reports

SN - 2045-2322

M1 - 36756

ER -