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Conference Paper
Daylight Operation of a High-Speed Free-Space Quantum Key Distribution using Silica-based Integration Chip and Micro-Optics-based Module
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- Authors
- Heasin Ko, Joong-Seon Choe, Byung-Seok Choi, Kap-Joong Kim, Jong-Hoi Kim, Yongsoon Baek, Chun Ju Youn
- Issue Date
- 2019-03
- Citation
- Optical Fiber Communication Conference (OFC) 2019, pp.1-3
- Publisher
- The Optical Society (OSA)
- Language
- English
- Type
- Conference Paper
- Abstract
- We developed a high-speed quantum key distribution (QKD) system integrated with a compact self-developed silica-based planar lightwave circuit chip and a micro-optics-based polarization module. Also, we demonstrated that our system can generate average secure keys at the rate of 701.22 kbps over a free-space link of 275 m in daylight by using effective noise filtering systems in the temporal, spectral, and spatial domains. Real-time beam tracking system was adopted to stabilize the fluctuation of the beam position.
- KSP Keywords
- High Speed, Planar lightwave circuit(PLC), Quantum Key Distribution, Real-time, Silica-based, Space link, System Integrated, Tracking System, beam tracking, free space, micro-optics