Heidelberg 2015 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 57: Optomechanics II

Q 57.3: Vortrag

Donnerstag, 26. März 2015, 15:00–15:15, P/H1

Light-Mediated Coupling of a Quantum Mechanical Oscillator to the Internal States of a Distant Atomic Ensemble — •Berit Vogell1, Tobias Kampschulte2, Matthew T. Rakher2, Aline Faber2, Philipp Treutlein2, Klemens Hammerer3, and Peter Zoller11Institut für Quantenoptik und Quanteninformation, Universität Innsbruck, Institut für theoretische Physik — 2Universität Basel, Department Physik — 3Universität Hannover, Institut für theoretische Physik

Hybrid quantum systems in which a mechanical oscillator is coupled to a well-controlled microscopic quantum system currently attract great interest. Such systems offer new possibilities for cooling, detection and quantum control of vibrations in engineered mechanical structures. Previous theoretical work on coupling nano-mechanical oscillators to atoms has focused on coupling to the motional atomic degrees of freedom [1]. Along these lines, a recent experiment demonstrated substantial sympathetic cooling of a mechanical oscillator [2]. In the present work we provide the theoretical framework for coupling of a nano-mechanical oscillator to the internal states of the atomic ensemble [3]. This allows us to couple the atomic ensemble to mechanical oscillators in a wide frequency range, offers the opportunity for large coupling strengths, and benefits from the sophisticated atomic toolbox.

[1] B. Vogell et al., Phys. Rev. A 87, 023816 (2013)

[2] A. Joeckel et al., Nature Nanotechnology (2014)

[3] B. Vogell et al., in preparation (2014)

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