A Silicon Photonic Chip-based System for 2.5-GHz Quantum Key Distribution (QKD)

W. Luo; L. Cao; H. Cai; M. F. Karim; L. C. Kwek; L. C. Kwek; A. Q. Liu; A. Q. Liu

doi:10.1364/OFC.2024.Th2A.9

Optical Fiber Communication Conference (OFC) 2024
Technical Digest Series (Optica Publishing Group, 2024),
paper Th2A.9
•https://doi.org/10.1364/OFC.2024.Th2A.9

A Silicon Photonic Chip-based System for 2.5-GHz Quantum Key Distribution (QKD)

W. Luo, L. Cao, H. Cai, M. F. Karim, L. C. Kwek, and A. Q. Liu

Optical Fiber Communication Conference 2024

San Diego California United States
24–28 March 2024
ISBN: 978-1-957171-32-6

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Posters Session III, In Person (Th2A)

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W. Luo, L. Cao, H. Cai, M. F. Karim, L. C. Kwek, and A. Q. Liu, "A Silicon Photonic Chip-based System for 2.5-GHz Quantum Key Distribution (QKD)," in Optical Fiber Communication Conference (OFC) 2024, Technical Digest Series (Optica Publishing Group, 2024), paper Th2A.9.

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Abstract

We have demonstrated a compact, chip-based system for high-speed polarization-encoded QKD, which utilizes advanced silicon photonics technology and operates at a clock rate of 2.5 GHz. Our design enables secure key rates up to 1.018 Mbps at equivalent fiber distance of 100 km in the finite-size regime. The results of the proof-of-principle experiment indicate that this high-speed, chip-based QKD system is a viable, high-performance solution well-suited for upcoming quantum communication applications.

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