Work

Optimal State Estimation for Cavity Optomechanical Systems

Year: 2015

Type: article

Abstract: We demonstrate optimal state estimation for a cavity optomechanical system through Kalman filtering. By taking into account nontrivial experimental noise sources, such as colored laser noise and spurious mechanical modes, we implement a realistic state-space model. This allows us to obtain the conditional system state, i.e., conditioned on previous measurements, with a minimal least-squares estimation error. We apply this method to estimate the mechanical state, as well as optomechanical correlations both in the weak and strong coupling regime. The application of the Kalman filter is an important next step for achieving real-time optimal (classical and quantum) control of cavity optomechanical systems.

Source: Physical Review Letters

DOI: 10.1103/physrevlett.114.223601

Authors: Witlef Wieczorek, Sebastian G. Hofer, Jason Hoelscher-Obermaier, Ralf Riedinger, Klemens Hammerer, Markus Aspelmeyer

Institutions: University of Vienna, Vienna Center for Quantum Science and Technology, Leibniz University Hannover, Max Planck Institute for Gravitational Physics

Language: English

Topic: Mechanical and Optical Resonators

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green