One-to-one and one-to-any quantum key distribution by improving long-distance frequency-division interferometer
Bao‐Sen Shi, Guang‐Can Guo · Journal of Modern Optics · 1999
We present a proposal for quantum key distribution, which is based on improving a long-distance frequency-division interferometer. In contrast to the model of Marrand and Townsend (1995, Opt. Lett, 20, (1062)), only one acousto-optical modulator and one unbalanced Mach-Zehnder interferometer are used in this system. We also show how this system is extended to give one-to-any key distribution, in which, only one unbalanced Mach-Zehnder interferometer is used.