2005/07/24 by Noam Gross, Einat Klein, Gross, Noam +10 · 1 citation
Computer Science · Physics and Astronomy · #Chaos control and synchronization #Chaos-based Image/Signal Encryption #Nonlinear Dynamics and Pattern Formation #cond-mat.dis-nn
paper · pdf · doi:10.48550/arxiv.cond-mat/0507554
arxiv created 2005/07/24 · arxiv updated 2009/12/01
Two mutually coupled chaotic diode lasers with individual external feedback, are shown to establish chaos synchronization in the low-frequency fluctuations regime. A third laser with identical external feedback but coupled unidirectionally to one of the pair does not synchronize. Both experiments and simulations reveal the existence of a window of parameters for which synchronization by mutual coupling is possible but synchronization by unidirectional coupling is not. This parameter space forms the basis of a proposed public-channel cryptographic scheme and is robust to various possible attacks.