Direct and Indirect Couplings in Coherent Feedback Control of Linear Quantum Systems

Guofeng Zhang (The Australian National University)

SYSTEMS AND CONTROL SERIES

DATE: 2011-03-25
TIME: 11:00:00 - 12:00:00
LOCATION: RSISE Seminar Room, ground floor, building 115, cnr. North and Daley Roads, ANU
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ABSTRACT:
This talk will discuss how to design direct and indirect couplings for use in coherent feedback control of a class of linear quantum stochastic systems. A general physical model for a nominal linear quantum system coupled directly and indirectly to external systems is presented. Fundamental properties of stability, dissipation, passivity, and gain for this class of linear quantum models are presented and characterized using complex Lyapunov equations and linear matrix inequalities (LMIs). Coherent H infinity and LQG synthesis methods are extended to accommodate direct couplings using multistep optimization. Examples are given to illustrate the results.

BIO:
Guofeng Zhang received a B.Sc degree and M.Sc. degree from Northeastern University, Shenyang, China, in 1998 and 2000 respectively. He received a Ph.D. degree in applied mathematics from the University of Alberta, Edmonton, Canada, in 2005. During 2005-2006, he was a Postdoctoral Fellow in the department of Electrical and Computer Engineering at the University of Windsor, Windsor, Canada. He joined the School of Electronic Engineering of the University of Electronic Science and Technology of China, Chengdu, Sichuan, China, in 2007. He is currently a Research Fellow in the School of Engineering of the Australian National University. His research interests include quantum control, sampled-data control and nonlinear dynamics.

MEDIA:
ANU_Mar25.pdf