Heidelberg 2015 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 62: Poster: Quantum Optics and Photonics III

Q 62.72: Poster

Donnerstag, 26. März 2015, 17:00–19:00, C/Foyer

Light scattering in hybrid optomechanical systems in diamond — •Luigi Giannelli, Giovanna Morigi, and Marc Bienert — Theoretische Physik, Universität des Saarlandes, Campus E2 6, D 66123 Saarbrücken, Germany

We theoretically investigate a hybrid optomechanical crystal in diamond consisting of an optical cavity, a mechanical resonator and a single nitrogen vacancy (NV) center. This work is based on [1], adapted for a crystal cavity. The electronic degree of freedom of the NV center, a single mode of the cavity's electromagnetic field and a single vibrational mode of the mechanical oscillator are mutually coupled by dipole interaction, radiation forces and via the strain field associated with the mechanical vibrations. For such a composite quantum system we study the light scattering in the regime of weak mechanical coupling, which can lead to laser cooling of the mechanical mode. We identify the parameters regimes, where cooling becomes possible and reveal the underlying dynamical processes whose characteristics manifest themselves in the spectrum of the scattered light.

[1] K. V. Kepesidis, S. D. Bennett, S. Portolan, M. D. Lukin, and P. Rabl. ''Phonon cooling and lasing with nitrogen-vacancy centers in diamond''. In: Physical Review B 88 (Aug. 2013), p. 064105.