Classical Cryptography in Multimode Fibers Using Optical Reciprocity
Yaron Bromberg, Brandon Redding, Sébastien M. Popoff, Nissim Ofek, Hui W. Cao · 2014
We demonstrate a method for secure optical communication in multimode fibers with classical light. Using strong mode mixing in the fiber, and optical reciprocity, a common random key is distributed between two remote parties.