A Two-way QKD Protocol Outperforming One-way Protocols at Low QBER

Jari Lietzen; Roope Vehkalahti; Olav Tirkkonen

doi:10.1109/ISIT44484.2020.9174522

A Two-way QKD Protocol Outperforming One-way Protocols at Low QBER

Jari Lietzen, Roope Vehkalahti, Olav Tirkkonen

Communications Theory

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

4 Citations (Scopus)

165 Downloads (Pure)

Abstract

Two-way quantum key distribution (QKD) protocols can provide positive secret key rates for considerably higher quantum bit error rates (QBER) than one-way protocols. However, when QBER is low, only modest key rate gains have been achieved. This is one of the major obstacles for using two-way protocols. In this paper we introduce a new two-way QKD protocol which is a step towards overcoming this shortcoming. Under the assumption that the eavesdropper can only perform individual symmetric quantum attacks, our protocol performs quantum key distribution with a secret key rate that is higher than the information theoretical bound limiting the performance of any one-way protocol. This holds true also for very low QBER values.

Original language	English
Title of host publication	2020 IEEE International Symposium on Information Theory, ISIT 2020 - Proceedings
Publisher	IEEE
Pages	1106-1111
Number of pages	6
ISBN (Electronic)	9781728164328
DOIs	https://doi.org/10.1109/ISIT44484.2020.9174522
Publication status	Published - Jun 2020
MoE publication type	A4 Conference publication
Event	IEEE International Symposium on Information Theory - Los Angeles, United States Duration: 21 Jul 2020 → 26 Jul 2020

Publication series

Name	IEEE International Symposium on Information Theory
ISSN (Print)	2157-8095
ISSN (Electronic)	2157-8117

Conference

Conference	IEEE International Symposium on Information Theory
Abbreviated title	ISIT
Country/Territory	United States
City	Los Angeles
Period	21/07/2020 → 26/07/2020

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10.1109/ISIT44484.2020.9174522

Lietzen_Two-way_QKD_Protocol_outperformingAccepted author manuscript, 156 KB

Cite this

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title = "A Two-way QKD Protocol Outperforming One-way Protocols at Low QBER",

abstract = "Two-way quantum key distribution (QKD) protocols can provide positive secret key rates for considerably higher quantum bit error rates (QBER) than one-way protocols. However, when QBER is low, only modest key rate gains have been achieved. This is one of the major obstacles for using two-way protocols. In this paper we introduce a new two-way QKD protocol which is a step towards overcoming this shortcoming. Under the assumption that the eavesdropper can only perform individual symmetric quantum attacks, our protocol performs quantum key distribution with a secret key rate that is higher than the information theoretical bound limiting the performance of any one-way protocol. This holds true also for very low QBER values.",

author = "Jari Lietzen and Roope Vehkalahti and Olav Tirkkonen",

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doi = "10.1109/ISIT44484.2020.9174522",

language = "English",

series = "IEEE International Symposium on Information Theory",

publisher = "IEEE",

pages = "1106--1111",

booktitle = "2020 IEEE International Symposium on Information Theory, ISIT 2020 - Proceedings",

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note = "IEEE International Symposium on Information Theory, ISIT ; Conference date: 21-07-2020 Through 26-07-2020",

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Lietzen, J, Vehkalahti, R & Tirkkonen, O 2020, A Two-way QKD Protocol Outperforming One-way Protocols at Low QBER. in 2020 IEEE International Symposium on Information Theory, ISIT 2020 - Proceedings., 9174522, IEEE International Symposium on Information Theory, IEEE, pp. 1106-1111, IEEE International Symposium on Information Theory, Los Angeles, California, United States, 21/07/2020. https://doi.org/10.1109/ISIT44484.2020.9174522

A Two-way QKD Protocol Outperforming One-way Protocols at Low QBER. / Lietzen, Jari; Vehkalahti, Roope; Tirkkonen, Olav.
2020 IEEE International Symposium on Information Theory, ISIT 2020 - Proceedings. IEEE, 2020. p. 1106-1111 9174522 (IEEE International Symposium on Information Theory).

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

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N2 - Two-way quantum key distribution (QKD) protocols can provide positive secret key rates for considerably higher quantum bit error rates (QBER) than one-way protocols. However, when QBER is low, only modest key rate gains have been achieved. This is one of the major obstacles for using two-way protocols. In this paper we introduce a new two-way QKD protocol which is a step towards overcoming this shortcoming. Under the assumption that the eavesdropper can only perform individual symmetric quantum attacks, our protocol performs quantum key distribution with a secret key rate that is higher than the information theoretical bound limiting the performance of any one-way protocol. This holds true also for very low QBER values.

AB - Two-way quantum key distribution (QKD) protocols can provide positive secret key rates for considerably higher quantum bit error rates (QBER) than one-way protocols. However, when QBER is low, only modest key rate gains have been achieved. This is one of the major obstacles for using two-way protocols. In this paper we introduce a new two-way QKD protocol which is a step towards overcoming this shortcoming. Under the assumption that the eavesdropper can only perform individual symmetric quantum attacks, our protocol performs quantum key distribution with a secret key rate that is higher than the information theoretical bound limiting the performance of any one-way protocol. This holds true also for very low QBER values.

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A Two-way QKD Protocol Outperforming One-way Protocols at Low QBER

Abstract

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Quantum Enhanced Microwave Backscatter Communications

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A Two-way QKD Protocol Outperforming One-way Protocols at Low QBER

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Quantum Enhanced Microwave Backscatter Communications

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