Stuttgart 2012 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 6: Mikromechanische Systeme

Q 6.2: Talk

Monday, March 12, 2012, 10:45–11:00, V7.02

Hybrid quantum system: CNT coupled to BEC — •Polina Mironova and Reinhold Walser — TU Darmstadt, Darmstadt, Germany

Hybrid quantum systems, i.e., coupling objects of quantum optics and solid state physics, have gained great attention during the last decade. This interest is due to the variety of possible applications, e.g. high-precision force and mass measurements or quantum computation. A particularly promising candidate for hybrid quantum system is the free standing carbon nanotube (CNT) on an atom-chip interacting with the bath of ultra cold atoms / BEC as realised by the experiments of the group of J. Fortagh [1]. We describe the oscillations of the CNT within a two mode model. Perturbation theory is used to solve the Heisenberg equations of motion while neglecting the backaction of the CNT on the BEC. The mean value of displacement around the equilibrium position of the CNT and corresponding standard deviation are calculated.

References:

[1] M.Gierling et al. "Cold-atom scanning probe microscopy", Nature Nanotechnology, 6, 446-451 (2011)