Title :
Feedback Control of Quantum System Based on State Distance
Author :
Kuang Sen ; Cong Shuang
Author_Institution :
Dept. of Autom., Univ. of Sci. & Technol. of China, China
Abstract :
Based on Bures distance, a Lyapounov function that represents a desired state and an actual state is selected for quantum systems. Considering the problems that the initial state is and isn´t orthogonal to the desired state respectively, a class of feedback control strategies is designed that ensures the stability of closed-loop systems. Finally, we make a simulation experiment on a spin-1/2 system with two types of controls and make an effect analysis of system evolution time and control size in the cases with different parameters.
Keywords :
Lyapunov methods; closed loop systems; control system synthesis; discrete time systems; feedback; Bures distance; Lyapunov function; closed-loop system; feedback control; quantum system; stability; state distance; Analytical models; Automation; Feedback control; IEEE catalog; Lyapunov method; Nuclear magnetic resonance; Size control; Stability; TV interference; Lyapounov function; feedback control; quantum system; stability;
Conference_Titel :
Control Conference, 2006. CCC 2006. Chinese
Conference_Location :
Harbin
Print_ISBN :
7-81077-802-1
DOI :
10.1109/CHICC.2006.280929
