Phys.org June 22, 2021
An international team of researchers (France, Germany, USA – UCLA, University of New-Mexico) shows that two uni-directionally coupled quantum cascade lasers operating in the chaotic regime and the synchronization between them allow for the extraction of the information that has been camouflaged in the chaotic emission. This building block represents a key tool to implement a high degree of privacy directly on the physical layer. The team has built a proof-of-concept communication at a wavelength of 5.7 μm with a message encryption at a bit rate of 0.5 Mbit/s. Their demonstration of private free-space communication between a transmitter and receiver opens strategies for physical encryption and decryption of a digital message…read more. Open Access TECHNICAL ARTICLEÂ
Private communication with chaos anti-synchronization. Credit: Nature Communications volume 12, Article number: 3327 (2021)Â