Partial feedback control of quantum systems using probabilistic fuzzy estimator

Abstract— A partial feedback control scheme with a probabilistic fuzzy estimator (PFE) is presented for the robust control of quantum systems. In this scheme, a probabilistic fuzzy simulator is trained to estimate the quantum states for feedback control of quantum systems. Usually, the estimated state is fed back to design a controller. However, when the estimated quantum state is an almost-eigenstate, a projective measurement will be triggered for the quantum system and the measurement results will be fed back to construct the controller and regulate the fuzzy estimator. This scheme is a partial feedback strategy with controlled discontinuous measurement, where the quantum measurement serves as a control tool and is helpful for driving the quantum system to a desired state tracking even in the presence of unknown disturbances and stochastic noises. An example of a two-spin-1 2 system is also presented to demonstrate the proposed approach.

• Type: Conference
• Year: 2009
• Where: CDC
• Authors: Chunlin Chen, Gerasimos G. Rigatos, Daoyi Dong, J. Lam
• Keywords: CDC 2009, Control Systems, Fuzzy Estimator, Quantum State, Quantum System