Optimal State Estimation for Cavity Optomechanical Systems
- Author(s)
- Witlef Wieczorek, Sebastian Hofer, Jason Hoelscher-Obermaier, Ralf Riedinger, Klemens Hammerer, Markus Aspelmeyer
- 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.
- Organisation(s)
- Quantum Optics, Quantum Nanophysics and Quantum Information
- External organisation(s)
- Gottfried Wilhelm Leibniz Universität Hannover
- Journal
- Physical Review Letters
- Volume
- 114
- No. of pages
- 6
- ISSN
- 0031-9007
- DOI
- https://doi.org/10.1103/PhysRevLett.114.223601
- Publication date
- 06-2015
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103026 Quantum optics
- Keywords
- ASJC Scopus subject areas
- General Physics and Astronomy
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/54282c03-f68a-4cdd-8552-27ff667b65cd