ALPS Poster Session 2

[ALPSp2-45] Ultra-stable Control of Single-photon Transmitter and Decoder for Differential Phase-Shifted Quantum-Key Distribution

*Shih-Chang Hsu¹, You-Cheng Lin¹, Kuan-Wei Hu¹, Chih-Hsien Cheng², Atsushi Matsumoto², Kouichi Akahane², Gong-Ru Lin^1,3 (1. National Taiwan University, 2. National Institute of Information and Communications Technology, 3. NTU-Tektronix Joint Research Center, Tektronix Inc. and National Taiwan University)

Ultra-stable control on bias of Di/i<10^-4 and temperature of DT/T<7´10^-5 for single-photon transmitter and stabilized isothermal control of 1-bit-delay interferometer enables secure quantum-key transmission with erroneous rate of <3% under ultra-low wavelength and power perturbations of Dλ/λ<10^-6 and DP/P<10^-4.