Quantum Dissipative Systems and Feedback Control Design by Interconnection

Details Quantum Dissipative Systems and Feedback Control Design by Interconnection Quantum Dissipative Systems and Feedback Control Design by Interconnection

2007-07-07

arxiv.org/abs/0707.1074v3

Physics

Quantum Physics

Scientific paper

The purpose of this paper is to extend J.C. Willems' theory of dissipative systems to the quantum domain. This general theory, which combines perspectives from the quantum physics and control engineering communities, provides useful methods for analysis and design of dissipative quantum systems. We describe the interaction of the plant and a class of exosystems in general quantum feedback network terms. Our results include an infinitesimal characterization of the dissipation property, which generalizes the well-known Positive Real and Bounded Real Lemmas, and is used to study some properties of quantum dissipative systems. We also show how to formulate control design problems using quantum network models, which implements Willems' `control by interconnection' for open quantum systems. This control design formulation includes, for example, standard problems of stabilization, regulation, and robust control.

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