Hannover 2016 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 58: Poster: Quantum Optics and Photonics IV

Q 58.12: Poster

Thursday, March 3, 2016, 16:30–19:00, Empore Lichthof

Efficient coupling of a trapped moving atom to a single photon in free space — •Thorsten Haase, Nils Trautmann, and Gernot Alber — Institut für Angewandte Physik, Technische Universität Darmstadt

The efficiency of the coupling of a single trapped two-level-system to a single photon in free space is strongly affected by the two level system's center of mass motion, especially if no sub-Doppler cooling techniques are applied [1]. By squeezing the center of mass state, the coupling efficiency of the two level system to a single photon can be greatly enhanced. Squeezing can be induced by parametric amplification due to a time dependent modulation of a harmonic trapping potential which can be realized even in cases of a weak trapping potential. We investigate the dynamics of the center of mass motion in the modulated trapping potential by taking dissipative processes into account which are induced by Doppler cooling.

[1] M. Fischer, M. Bader, R. Maiwald, A. Golla, M. Sondermann, and G. Leuchs, Applied Physics B 117, 797 (2014).