Single-Photon Differential-Phase-Shift Quantum Key Distribution
Chang Liu, Shanchao Zhang, Luwei Zhao, Peng Chen, C. Fung, H. F. Chau, M. M. T. Loy, Shengwang Du · The Rochester Conferences on Coherence and Quantum Optics and the Quantum Information and Measurement meeting · 2013
We demonstrate differential-phase-shift quantum key distribution using narrowband heralded single photons with amplitude-phase modulations. We obtain a quantum bit error rate as low as 3.06% which meets the unconditional security requirement.