Mainz 2017 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 7: Ultracold atoms and BEC - I (with A)

Q 7.1: Invited Talk

Monday, March 6, 2017, 14:30–15:00, N 1

Towards Atomtronic Interferometry — •Wolf von Klitzing — Institute of Electronic Structure and Laser, FORTH, 71110 Heraklion, Crete, Greece

Atom interferometers are some of the most sensitive instruments available to date. In order to avoid unwanted perturbations, most of the matterwave interferometers use atoms in free fall. This is largely due to the lack of appropriatly coherent matterwave guides. Here, we present a novel Sagnac interferometer based on state-dependent manipulation of atoms in waveguides using time-averaged adiabatic potentials (TAAP) [1,2]. In this clock-type matterwave interferometer the atoms are in different internal states in the two arms of the interferometer and can thus be manipulated nearly independently. In analogy to the magic frequency of the strontium lattice clocks, by carefully tuning the confining potential a magic-field strength can be found such that the linear dependence on the potential vanishes [3].

We will report the use of adiabatic potentials in the creation of ultra-bright atom lasers. And present initial experimental results towards the realization of this interferometer. Most notably the state-dependent manipulation and guiding of the atoms.

[1] P. Navez et al. N.J.Phys. 18:7 075014 (2016)

[2] I. Lesanovsky and W. von Klitzing PRL 99:8 083001 (2007)

[3] P. Treutlein et al. PRL 92:20 203005 (2004)