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The research group of professor Wei Pan made breakthrough in Synchronization of Complex Network

Source:SIST  Author:Liao Fan  Date:2017-03-13  Click:561

Recently, PhD student Liyue Zhang of School of Information Science and Technology (advisor: Professor Wei Pan), made breakthrough in the Synchronization of complex network, the work was published in Physical Review Letter titled “Incoherence-mediated Remote Synchronization”. This paper was highly evaluated by the experts: “I think that the authors present novel, original and interesting results of broad relevance to the possibility of remote synchronization mediated by an incoherent intermediate population”, “I appreciate the extension of previous work to network populations and their results will help the understanding and interpretation of neural dynamics”.

Figure:  Topology for IMRS and chaotic dynamics for cluster synchronization

In previously identified forms of remote synchronization between two nodes, the intermediate portion of the network connecting the two nodes is not synchronized with them but generally exhibits some coherent dynamics. A new network phenomenon called incoherence-mediated remote synchronization (IMRS) is reported, in which two non-contiguous parts of the network are identically synchronized while the dynamics of the intermediate part is statistically and information theoretically incoherent. Identifying mirror symmetry in the network structure as a key mechanism allowing for such behavior, and showing IMRS is robust against dynamical noise as well as against system parameter changes. IMRS may underlie neuronal information processing and potentially lead to network solutions for encryption key distribution and secure communication. Since zero-lag synchronization of distant areas of the brain has been experimentally observed, this leads to the intriguing possibility that mirror symmetry is hidden deep inside the synaptic connectivity structure. This discovery will spark interests of many researchers and lead to further discoveries of fundamental connections between hidden network symmetry and emergent collective behavior in complex systems.

The work was supported by the NSF of China (Grant No. 61274042), CSC, 2013 Doctoral Innovation Funds of SWJTU.

Center of Information Photonics and Communication, led by professor Wei Pan, Lianshan Yan and Bin Luo et al., has obtained a series of achievements in optical communication, optic fiber sensor and microwave photonics. According to international frontier disciplines, more than 100 SCI-index papers were published in peer-reviewed international journals (e.g., Phys. Rev. Lett., Phys. Rev. E, Opt. Lett., Opt. Express, IEEE) only in the fields of chaotic communication and synchronization, and the results were cited by lots of famous journals such as Rev. Mod. Phys.

Physical Review Letters is a scientific journal that is published by the American Physical Society with impact factor 7.645. Physical Review Letter is the world’s premier physics letter journal, and many physicist and other scientists consider Physical Review Letters one of the most prestigious journals of physics.