Quantum Key Distribution over deployed fiber with room-temperature telecom-band single photon source
Автор: Centre for Quantum Technologies
Загружено: 2025-07-07
Просмотров: 209
Quantum Lunch Seminar Series
Speaker: Zhang Xingjian
Abstract: Single-photon sources (SPSs) are directly applicable in quantum key distribution (QKD) because they allow the implementation of the canonical BB84 protocol. To date, QKD implementations using SPS are not wide spread because of the need for cryogenic operation, or the inability to transmit over telecommunication fibers. We report a QKD demonstration over deployed fiber links, using a room-temperature telecom SPS based on a GaN defect with time-bin and polarization encoding methods respectively. Our work expanded the channel environment of telecom SPSs-based QKD beyond the in-lab free-space case to include deployed fibers.
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