Quantum Key Distribution using Phase Encoding in Double-Pass Silica-on-Silicon Circuits with Grating Reflectors
Michael Kristensen, J. Maack, A.D. Thomasen, T. Balle, Jacob Selchau · Advanced Photonics · 2014
We have realized quantum key distribution over 50 km with phase encoding in silica-on-silicon circuits including Bragg grating filters allowing compact size and multichannel operation. The circuits are thermally adjusted to minimize crosstalk.