ALPS Poster Session 2

[ALPSp2-43] Ultra-stable DFBLD wavelength stabilization for error-free BPSK-QKD

*You-Xin Wang¹, 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)

A DFBLD with <±0.0001°C feedback control and <0.1pm ultra-stable wavelength stability is demonstrated for delay-interferometric BPSK-QKD decoding with <0.5% bit-amplitude fluctuation and error-free BER of <8.6×10^-10.