Mainz 2017 – scientific programme

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A: Fachverband Atomphysik

A 26: Poster Session II

A 26.7: Poster

Wednesday, March 8, 2017, 17:00–19:00, P OG1

Towards Ultracold Ba⁺−Li Interactions: The Barium Setup — •P. Weckesser, F. Thielemann, Y. Minet, A. Lambrecht, J. Schmidt, L. Karpa, M. Debatin, and T. Schaetz — Albert-Ludwigs-Universitaet Freiburg

The interplay of ultracold atoms and ions has recently gained interest in the atomic community [1], due to its wide applications in quantum chemistry [2] and quantum control [3]. To control the atom-ion interaction it is necessary to prepare the mixture at ultracold temperatures. Optical trapping of ions [4,5] provides a new pathway to achieve ultracold atom-ion mixtures, as it overcomes the intrinsic micromotion heating of conventional Paul traps [6], currently limiting experiments to collision energies on the order of a few mK.

Here we present our novel experimental setup combining Ba⁺ ions and Li atoms. On this poster we focus on the Barium branch of the experiment. We present the Barium laser setup, including a home build frequency doubler, generating laser light at 615nm. Furthermore we discuss a new ion trap suitable to transfer and detect Ba⁺ ions and Li atoms in an optical dipole trap.

[1] A. Haerter et al., Contemporary Physics, volume 55, issue 1, pages 33-45 (2014).

[2] R.Cote et al. Phys.Rev.Lett. 89.093001 (2002).

[3] Idziaszek et al., Physical Review A 76.3 (2007): 033409.

[4] T.Huber et al., Nat. Comm. 5,5587 (2014).

[5] A. Lambrecht et al., arXiv preprint arXiv:1609.06429 (2016).

[6] M.Cetina et al., Phys.Rev.Lett. 109,253201 (2012)