arXiv:1611.04140
Mixed LQG and $H_\infty$ Coherent Feedback Control for Linear Quantum Systems
Cui, Lei, Zhiyuan Dong, Guofeng Zhang, Joseph H. W. Lee
Abstract
The purpose of this paper is to study the mixed linear quadratic Gaussian (LQG) and $H_\infty$ optimal control problem for linear quantum stochastic systems, where the controller itself is also a quantum system, often referred to as "coherent feedback controller". A lower bound of the LQG control is proved. Then two different methods, rank constrained linear matrix inequality (LMI) method and genetic algorithm are proposed for controller design. A passive system (cavity) and a non-passive one (degenerate parametric amplifier, DPA) demonstrate the effectiveness of these two proposed algorithms.