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Q: Fachverband Quantenoptik und Photonik

Q 27: Poster: Quantum Optics and Photonics II

Q 27.33: Poster

Dienstag, 1. März 2016, 16:30–19:00, Empore Lichthof

Aberrations of atomic beam splitters — •Antje Schreiber and Reinhold Walser — Institut für Angewandte Physik TU-Darmstadt, Darmstadt, Germany

Atom interferometry provides the opportunity of high-precision measurements of rotation and acceleration. Therefore atoms are the ultimate sensors for inertial navigation, geological exploration and fundamental physics. In the QUANTUS free-fall experiments atom interferometry is the central method as well [1].

Like in optical systems all matter wave devices like traps, beam splitters and mirrors exhibit imperfections. For that reason it is necessary to quantify the amount of aberrations that are caused by real devices.

In this contribution we focus on atomic beam splitters in three dimensions, using a quantum Monte Carlo simulation [2, 3]. We characterize non-ideal behaviour due to the spatial variations of the laser beam profiles, wave front curvatures and spontaneous emission. In particular we will study the response of a beam splitter due to velocity dispersion.

The theoretical concepts as well as first simulation results are shown on our poster.

References:

[1] H. Müntinga et al., Phys. Rev. Lett. 110, 093602 (2013)

[2] R. Dum et al., Phys. Rev. A 45, 4879 (1992)

[3] K. Mølmer et al., J. Opt. Soc. Am. B 10, 524 (1993)