Cavity Opto-Mechanics with a Bose-Einstein Condensate
| Autor: | Stephan Ritter, Tobias Donner, Tilmann Esslinger, Ferdinand Brennecke |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2008 |
| Předmět: |
Electromagnetic field
Physics Quantum Physics Multidisciplinary Photon Field (physics) Cavity quantum electrodynamics FOS: Physical sciences Physics::Optics law.invention Condensed Matter - Other Condensed Matter Coupling (physics) law Quantum mechanics Physics::Accelerator Physics Quantum Physics (quant-ph) Excitation Optomechanics Bose–Einstein condensate Other Condensed Matter (cond-mat.other) |
| Popis: | Cavity opto-mechanics studies the coupling between a mechanical oscillator and a cavity field, with the aim to shed light on the border between classical and quantum physics. Here we report on a cavity opto-mechanical system in which a collective density excitation of a Bose-Einstein condensate is shown to serve as the mechanical oscillator coupled to the cavity field. We observe that a few photons inside the ultrahigh-finesse cavity trigger a strongly driven back-action dynamics, in quantitative agreement with a cavity opto-mechanical model. With this experiment we approach the strong coupling regime of cavity opto-mechanics, where a single excitation of the mechanical oscillator significantly influences the cavity field. The work opens up new directions to investigate mechanical oscillators in the quantum regime and quantum gases with non-local coupling. F.B. and S.R. contributed equally to this work. 6 pages, 4 figures |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|