Hannover 2013 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 48: Ultracold atoms: Manipulation and detection (with Q)

A 48.4: Vortrag

Freitag, 22. März 2013, 11:45–12:00, F 142

Optomechanics with an atomic array in a cavity — •Oxana Mishina and Giovanna Morigi — Theoretische Physik, Universität des Saarlandes, D-66041 Saarbrücken, Germany

Cold atomic ensembles inside an optical cavities are good candidates for exploring quantum aspects of optomechanical coupling. An interesting perspective emerges in the configuration when the atoms are confined by an external periodic potential inside a high-finesse resonator. We present a theoretical model describing the optomechanical coupling of the atomic array with a single mode light in a cavity and investigate cooling of the atomic motion to the ground state of the individual wells. We reproduce the dynamics observed in [1]. Moreover, we investigate further experimental regimes and find that arrays with tens of atoms can be cooled down to the ground state within few milliseconds for accessible experimental parameters. These results set the starting point for the exploration of the light-phonon interface and possibly novel quantum states of motion.

[1] Optomechanical Cavity Cooling of an Atomic Ensemble M.H., Schleier-Smith, I.D. Leroux, H. Zhang, M.A. Van Camp, and V. Vuletić, Phys. Rev. Lett. 107, 143005 (2011)