@article {9314050,
	title = {High-Speed Random-Channel Cryptography in Multimode Fibers},
	journal = {IEEE Photonics Journal},
	volume = {13},
	year = {2021},
	pages = {1-9},
	abstract = {We propose and experimentally demonstrate high-speed operation of random-channel cryptography (RCC) in multimode fibers. RCC is a key generation and distribution method based on the random channel state of a multimode fiber and multi-dimension to single-dimension projection. The reciprocal intensity transmittance of the channel shared between the two legitimate users is used to generate and distribute correlated keys. In previous work, RCC{\textquoteright}s key rate-distance product was limited by the speed of light. In this work, we show that adding a fast modulator at one end of the channel decouples the key rate and distance, resulting in a significant improvement in the key rate-distance product, limited only by the fiber{\textquoteright}s modal dispersion. Error-free transmission at a key rate-distance product of 64.7 Mbps 12 km, which is seven orders of magnitude higher than the previous demonstration, was achieved. The proposed method{\textquoteright}s security arises from a fundamental asymmetry between the eavesdroppers and legitimate users measurement complexity.},
	keywords = {Electro-optical systems, fiber optic systems, Fluctuations, Modulation, Optical fiber communication, Optical fiber dispersion, Optical fibers, Receivers, security and encryption, Speckle},
	issn = {1943-0655},
	doi = {10.1109/JPHOT.2021.3049253},
	url = {https://ieeexplore.ieee.org/document/9314050?arnumber=9314050},
	author = {R. Sampson and H. Wen and B. Huang and R. Amezcua Correa and Y. Bromberg and H. Cao and Li, G.}
}
