First Demonstration of 25λ × 10 Gb/s C+L Band Classical / DV-QKD Co-Existence Over Single Bidirectional Fiber Link

Florian Honz; Florian Prawits; Obada  Alia; Hesham  Sakr; Thomas  Bradley; Cong  Zhang; Radan  Slavik; Francesco  Poletti; George  Kanellos; Reza Nejabati; Philip Walther; Dimitra  Simeonidou; Hannes Hübel; Bernhard Schrenk

doi:10.1109/JLT.2023.3256352

First Demonstration of 25λ × 10 Gb/s C+L Band Classical / DV-QKD Co-Existence Over Single Bidirectional Fiber Link

Florian Honz, Florian Prawits, Obada Alia, Hesham Sakr, Thomas Bradley, Cong Zhang, Radan Slavik, Francesco Poletti, George Kanellos, Reza Nejabati, Philip Walther, Dimitra Simeonidou, Hannes Hübel, Bernhard Schrenk

Security & Communication Technologies

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

Abstract

As quantum key distribution has reached the maturity level for practical deployment, questions about the co-integration with existing classical communication systems are of utmost importance. To this end we demonstrate how the co-propagation of classical and quantum signals can benefit from the development of novel hollow-core fibers. We demonstrate a secure key rate of 330 bit/s for a quantum channel at 1538 nm in the presence of 25 × 10 Gb/s classical channels, transmitted at an aggregated launch power of 12 dBm, spanning over the C+L-band in the same hollow-core fiber link. Furthermore, we show the co-integration of the classical key-distillation channel onto this fiber link, turning it into a bidirectional fiber link and thereby mitigating the need for multiple fibers. We believe this to be an important step towards the deployment and integration of hollow-core fibers together with DV-QKD for the inherently secure telecom network of the future.

Original language	English
Pages (from-to)	3587-3593
Number of pages	7
Journal	Journal of Lightwave Technology
Volume	41
Issue number	11
DOIs	https://doi.org/10.1109/JLT.2023.3256352
Publication status	Published - 1 Jun 2023

Research Field

Enabling Digital Technologies

Keywords

Analog-digital conversion
Multiplexing
Optical fiber communication
Optical fiber networks
Optical fibers
Quantum channels
Quantum communication
Quantum cryptography
Quantum key distribution
Raman scattering
Synchronization
Wavelength division multiplexing

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10.1109/JLT.2023.3256352

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Honz, F., Prawits, F., Alia, O., Sakr, H., Bradley, T., Zhang, C., Slavik, R., Poletti, F., Kanellos, G., Nejabati, R., Walther, P., Simeonidou, D., Hübel, H., & Schrenk, B. (2023). First Demonstration of 25λ × 10 Gb/s C+L Band Classical / DV-QKD Co-Existence Over Single Bidirectional Fiber Link. Journal of Lightwave Technology, 41(11), 3587-3593. https://doi.org/10.1109/JLT.2023.3256352

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title = "First Demonstration of 25λ × 10 Gb/s C+L Band Classical / DV-QKD Co-Existence Over Single Bidirectional Fiber Link",

abstract = "As quantum key distribution has reached the maturity level for practical deployment, questions about the co-integration with existing classical communication systems are of utmost importance. To this end we demonstrate how the co-propagation of classical and quantum signals can benefit from the development of novel hollow-core fibers. We demonstrate a secure key rate of 330 bit/s for a quantum channel at 1538 nm in the presence of 25 × 10 Gb/s classical channels, transmitted at an aggregated launch power of 12 dBm, spanning over the C+L-band in the same hollow-core fiber link. Furthermore, we show the co-integration of the classical key-distillation channel onto this fiber link, turning it into a bidirectional fiber link and thereby mitigating the need for multiple fibers. We believe this to be an important step towards the deployment and integration of hollow-core fibers together with DV-QKD for the inherently secure telecom network of the future. ",

keywords = "Analog-digital conversion, Multiplexing, Optical fiber communication, Optical fiber networks, Optical fibers, Quantum channels, Quantum communication, Quantum cryptography, Quantum key distribution, Raman scattering, Synchronization, Wavelength division multiplexing",

author = "Florian Honz and Florian Prawits and Obada Alia and Hesham Sakr and Thomas Bradley and Cong Zhang and Radan Slavik and Francesco Poletti and George Kanellos and Reza Nejabati and Philip Walther and Dimitra Simeonidou and Hannes H{\"u}bel and Bernhard Schrenk",

year = "2023",

month = jun,

day = "1",

doi = "10.1109/JLT.2023.3256352",

language = "English",

volume = "41",

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journal = "Journal of Lightwave Technology",

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Honz, F , Prawits, F, Alia, O, Sakr, H, Bradley, T, Zhang, C, Slavik, R, Poletti, F, Kanellos, G, Nejabati, R, Walther, P, Simeonidou, D, Hübel, H & Schrenk, B 2023, 'First Demonstration of 25λ × 10 Gb/s C+L Band Classical / DV-QKD Co-Existence Over Single Bidirectional Fiber Link', Journal of Lightwave Technology, vol. 41, no. 11, pp. 3587-3593. https://doi.org/10.1109/JLT.2023.3256352

TY - JOUR

T1 - First Demonstration of 25λ × 10 Gb/s C+L Band Classical / DV-QKD Co-Existence Over Single Bidirectional Fiber Link

AU - Honz, Florian

AU - Prawits, Florian

AU - Alia, Obada

AU - Sakr, Hesham

AU - Bradley, Thomas

AU - Zhang, Cong

AU - Slavik, Radan

AU - Poletti, Francesco

AU - Kanellos, George

AU - Nejabati, Reza

AU - Walther, Philip

AU - Simeonidou, Dimitra

AU - Hübel, Hannes

AU - Schrenk, Bernhard

PY - 2023/6/1

Y1 - 2023/6/1

N2 - As quantum key distribution has reached the maturity level for practical deployment, questions about the co-integration with existing classical communication systems are of utmost importance. To this end we demonstrate how the co-propagation of classical and quantum signals can benefit from the development of novel hollow-core fibers. We demonstrate a secure key rate of 330 bit/s for a quantum channel at 1538 nm in the presence of 25 × 10 Gb/s classical channels, transmitted at an aggregated launch power of 12 dBm, spanning over the C+L-band in the same hollow-core fiber link. Furthermore, we show the co-integration of the classical key-distillation channel onto this fiber link, turning it into a bidirectional fiber link and thereby mitigating the need for multiple fibers. We believe this to be an important step towards the deployment and integration of hollow-core fibers together with DV-QKD for the inherently secure telecom network of the future.

AB - As quantum key distribution has reached the maturity level for practical deployment, questions about the co-integration with existing classical communication systems are of utmost importance. To this end we demonstrate how the co-propagation of classical and quantum signals can benefit from the development of novel hollow-core fibers. We demonstrate a secure key rate of 330 bit/s for a quantum channel at 1538 nm in the presence of 25 × 10 Gb/s classical channels, transmitted at an aggregated launch power of 12 dBm, spanning over the C+L-band in the same hollow-core fiber link. Furthermore, we show the co-integration of the classical key-distillation channel onto this fiber link, turning it into a bidirectional fiber link and thereby mitigating the need for multiple fibers. We believe this to be an important step towards the deployment and integration of hollow-core fibers together with DV-QKD for the inherently secure telecom network of the future.

KW - Analog-digital conversion

KW - Multiplexing

KW - Optical fiber communication

KW - Optical fiber networks

KW - Optical fibers

KW - Quantum channels

KW - Quantum communication

KW - Quantum cryptography

KW - Quantum key distribution

KW - Raman scattering

KW - Synchronization

KW - Wavelength division multiplexing

U2 - 10.1109/JLT.2023.3256352

DO - 10.1109/JLT.2023.3256352

M3 - Article

SN - 0733-8724

VL - 41

SP - 3587

EP - 3593

JO - Journal of Lightwave Technology

JF - Journal of Lightwave Technology

IS - 11

ER -

First Demonstration of 25λ × 10 Gb/s C+L Band Classical / DV-QKD Co-Existence Over Single Bidirectional Fiber Link

Abstract

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Keywords

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