Sagnac Quantum Key Distribution Using Novel Polarization-Insensitive Phase Modulators Based On Frequency Shift
Leilei Huang, Bing Qi, R. Mong, Li Qian, Hoi‐Kwong Lo · 2006 Digest of the LEOS Summer Topical Meetings · 2006
We demonstrate a stable Sagnac quantum key distribution implementing BB84 phase-encoding protocol based on acousto-optic frequency shifters. The quantum bit error rate remains 4-6.5% for at least one hour without recalibration or feedback control.