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 (Corresponding author), 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

Quantum Optics, Quantum Nanophysics and Quantum Information

Publications: Contribution to journal › Article › Peer Reviewed

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

Austrian Fields of Science 2012

103021 Optics
103025 Quantum mechanics

Keywords

Multiplexing
optical fiber communication
optical fibers
quantum communication
quantum cryptography
quantum key distribution
Raman scattering

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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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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 = "Multiplexing, optical fiber communication, optical fibers, quantum communication, quantum cryptography, quantum key distribution, Raman scattering",

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",

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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

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AU - Honz, Florian

AU - Prawits, Florian

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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.

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

Abstract

Austrian Fields of Science 2012

Keywords

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