Experimental Demonstration of Real-time Bob Continuous-Variable Quantum Key Distribution over 25.7-km fiber

João Frazão; Vincent van Vliet; Menno van den Hout; Kadir Gümüş; Sjoerd van der Heide; A. Albores Mejia; Boris Škorić; Chigo M. Okonkwo

Experimental Demonstration of Real-time Bob Continuous-Variable Quantum Key Distribution over 25.7-km fiber

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Abstract

A practical CV-QKD system has been presented and characterized. Our real-time GPU- based receiver (Bob) implementation demonstrates effective calibration, digital signal processing, and post- processing techniques. The system achieves peak finite-size secret key rates up to 5.8 Mbps over 12.8 km and 0.5 Mbps over a 25.7 km fiber distance. Additionally, we conducted a numerical simulation analysis to enhance the system’s resilience to quantum channel loss. Various scenarios were explored, focusing on potential improvements in excess noise, reconciliation efficiency, and quantum efficiency, aiming to extend distance tolerances beyond 50 km

Original language	English
Number of pages	4
Publication status	Published - Aug 2024
Event	24th Asian Quantum Information Science Conference, AQIS 2024 - Sapporo, Japan Duration: 26 Aug 2024 → 30 Aug 2024

Conference

Conference	24th Asian Quantum Information Science Conference, AQIS 2024
Abbreviated title	AQIS 2024
Country/Territory	Japan
City	Sapporo
Period	26/08/24 → 30/08/24

Keywords

quantum key distribution
CV-QKD
Real-time
fiber

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AQIS_Joao_Frazao (1)Final author version , 289 KB

High Capacity Optical Transmission Lab
Okonkwo, C. (Manager), van der Heide, S. (Operator), van den Hout, M. (Operator), Goossens, S. (Operator), van Weerdenburg, J. J. A. (Operator), van Vliet, V. (Operator), Bradley, T. (Manager), Albores-Mejia, A. (Manager), Fatkhiev, D. (Operator), Freire Hermelo, M. (Manager), Gümüş, K. (Operator), Kalla, B. (Operator), Alomari, S. (Operator), Chen, V. (Manager), Anya, U. (Operator) & dos Reis Frazão, J. (Manager)
Electrical Engineering
Facility/equipment: Research lab

Cite this

@conference{146cbb43f72b4357bd5c7fa4b49d69c0,

title = "Experimental Demonstration of Real-time Bob Continuous-Variable Quantum Key Distribution over 25.7-km fiber",

abstract = "A practical CV-QKD system has been presented and characterized. Our real-time GPU- based receiver (Bob) implementation demonstrates effective calibration, digital signal processing, and post- processing techniques. The system achieves peak finite-size secret key rates up to 5.8 Mbps over 12.8 km and 0.5 Mbps over a 25.7 km fiber distance. Additionally, we conducted a numerical simulation analysis to enhance the system{\textquoteright}s resilience to quantum channel loss. Various scenarios were explored, focusing on potential improvements in excess noise, reconciliation efficiency, and quantum efficiency, aiming to extend distance tolerances beyond 50 km",

keywords = "quantum key distribution, CV-QKD, Real-time, fiber",

author = "Jo{\~a}o Fraz{\~a}o and \{van Vliet\}, Vincent and \{van den Hout\}, Menno and Kadir G{\"u}m{\"u}{\c s} and \{van der Heide\}, Sjoerd and \{Albores Mejia\}, A. and Boris {\v S}kori{\'c} and Okonkwo, \{Chigo M.\}",

year = "2024",

month = aug,

language = "English",

note = "24th Asian Quantum Information Science Conference, AQIS 2024, AQIS 2024 ; Conference date: 26-08-2024 Through 30-08-2024",

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TY - CONF

T1 - Experimental Demonstration of Real-time Bob Continuous-Variable Quantum Key Distribution over 25.7-km fiber

AU - Frazão, João

AU - van Vliet, Vincent

AU - van den Hout, Menno

AU - Gümüş, Kadir

AU - van der Heide, Sjoerd

AU - Albores Mejia, A.

AU - Škorić, Boris

AU - Okonkwo, Chigo M.

PY - 2024/8

Y1 - 2024/8

N2 - A practical CV-QKD system has been presented and characterized. Our real-time GPU- based receiver (Bob) implementation demonstrates effective calibration, digital signal processing, and post- processing techniques. The system achieves peak finite-size secret key rates up to 5.8 Mbps over 12.8 km and 0.5 Mbps over a 25.7 km fiber distance. Additionally, we conducted a numerical simulation analysis to enhance the system’s resilience to quantum channel loss. Various scenarios were explored, focusing on potential improvements in excess noise, reconciliation efficiency, and quantum efficiency, aiming to extend distance tolerances beyond 50 km

AB - A practical CV-QKD system has been presented and characterized. Our real-time GPU- based receiver (Bob) implementation demonstrates effective calibration, digital signal processing, and post- processing techniques. The system achieves peak finite-size secret key rates up to 5.8 Mbps over 12.8 km and 0.5 Mbps over a 25.7 km fiber distance. Additionally, we conducted a numerical simulation analysis to enhance the system’s resilience to quantum channel loss. Various scenarios were explored, focusing on potential improvements in excess noise, reconciliation efficiency, and quantum efficiency, aiming to extend distance tolerances beyond 50 km

KW - quantum key distribution

KW - CV-QKD

KW - Real-time

KW - fiber

M3 - Paper

T2 - 24th Asian Quantum Information Science Conference, AQIS 2024

Y2 - 26 August 2024 through 30 August 2024

ER -

Experimental Demonstration of Real-time Bob Continuous-Variable Quantum Key Distribution over 25.7-km fiber

Abstract

Conference

Keywords

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Equipment

High Capacity Optical Transmission Lab

Cite this