Date: Tue, November 7, 17:15-19:15
Place: Room An301, An Block, IIS, The University of Tokyo
Invited Speaker: Prof. Rajarshi Roy (University of Maryland)

Title: Chaotic yet consistent?  Synchronization of driven nonlinear systems

Abstract:  
Dynamical systems respond to external signals in several different
ways. We explore experimentally how complex waveforms (chaotic or noisy)
with different characteristics generate responses in driven nonlinear
optical systems.   We look first at generalized synchronization, when
the system is driven by a chaotic waveform recorded from the system
itself.  We then enlarge the set of drive signals to include noisy
waveforms.  The notion of "consistency" describes how a system may
respond to either type of repetitive driving, starting from different
initial conditions.  Numerical simulations of mathematical models of the
optical systems reveal the role of internal noise, dynamical
instabilities as well as the influence of drive waveform design on the
consistency of response.  We point out possible applications of these
ideas to dynamical non-destructive testing of structures and devices -
biological, mechanical, electronic and optical.