Heidelberg 2015 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 34: Ultracold Atoms: Trapping and Cooling II (with Q)

A 34.2: Vortrag

Donnerstag, 26. März 2015, 14:45–15:00, P/H2

Loading atoms into hollow-core fibers — •Lachezar Simeonov¹, Micha Ober², Thorsten Peters¹, and Reinhold Walser² — ¹Institut für Angewandte Physik, Technische Universität Darmstadt, Hochschulstrasse 6, 64289 Darmstadt, Germany — ²Institut für Angewandte Physik Technische Universität Darmstadt Geb. S2/09, 2. Stock, Zimmer 104 Hochschulstrasse 4A D-64289 Darmstadt, Germany

Loading cold Rb atoms at temperature 120 μK out of a magneto-optical trap (MOT) into a hollow-core photonic crystal fiber (7 μm core diameter) [1] promises interesting scenarios for strong light-atom coupling. To simulate the loading procedure and to optimize the coupling efficiency, we use a 3-dimensional Quantum-Monte-Carlo wave function simulation [2]. In this contribution, we discuss basic aspects of this simulation, modelling Rb atoms as a two-level system. We describe the non-equilibrium relaxation of a thermal ensemble subject to laser cooling in phase space and present results.

[1] F. Blatt, T. Halfmann, and T. Peters, Opt. Lett., Vol.39, No. 3 (2014).

[2] C. W. Gardiner, P. Zoller, Quantum Noise, a handbook of Markovian and non-Markovian quantum stochastic methods with applications to quantum optics, 2. enl. ed.- Springer, 2000