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Published on: March 30, 2017
Tunable cavity optomechanics with ultracold atoms
T P Purdy1, D W C Brooks, T Botter
1Department of Physics, University of California, Berkeley California 94720, USA.
Physical Review Letters
|January 15, 2011
Summary
We demonstrate quantum cavity optomechanics using cold atoms in a Fabry-Perot cavity. Tuning atomic positions controls coupling, impacting optical nonlinearity and frequency shifts in a novel quadratic regime.
Area of Science:
- Quantum physics
- Atomic physics
- Optomechanics
Background:
- Quantum cavity optomechanics explores interactions between light and mechanical motion.
- Cold atoms offer precise control for quantum system implementation.
Purpose of the Study:
- To realize and characterize quantum cavity optomechanics using cold atoms.
- To investigate the impact of tunable optomechanical coupling on system properties.
Main Methods:
- Utilizing an atom-chip setup to localize cold atoms within a Fabry-Perot optical cavity.
- Employing subwavelength positioning of the atomic ensemble.
- Tuning linear and quadratic optomechanical coupling parameters.
Main Results:
- Demonstrated effective control over linear and quadratic optomechanical coupling.
- Observed tuning effects on cavity optical nonlinearity.
- Characterized optomechanical frequency shifts in the quadratic-coupling regime for the first time.
Conclusions:
- Atom-chip-based quantum cavity optomechanics with cold atoms is feasible.
- Tunable coupling offers a new pathway to control optomechanical interactions.
- This work provides a foundation for exploring novel quantum phenomena in optomechanical systems.
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