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Mainz 2017 – scientific programme

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A: Fachverband Atomphysik

A 26: Poster Session II

A 26.11: Poster

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

Impurity Atoms as a Quantum Probe Using Radiofrequency-Dressed Adiabatic Potentials — •Kathrin Luksch, Tiffany Harte, Elliot Bentine, Adam Barker, Benjamin Yuen, and Christopher Foot — Clarendon Laboratory, Parks Road, Oxford, OX1 3PU

Ultracold atoms can be confined in adiabatic potentials formed by radiofrequency (RF) dressing of magnetically trapped atoms. We demonstrate this approach can be extended by using multiple RFs to generate versatile trap geometries, such as a double-well potential generated by three distinct RFs.

In a new approach to probing complex quantum systems for quantum simulations, we plan to probe the dynamics of a BEC using a second impurity species to look at non-equilibrium phenomena.

Utilising the species-selectivity of the multi-RF dressed adiabatic potentials, we will immerse impurity atoms trapped in a double-well (85Rb) into a bath of atoms of another species (87Rb). The tunnelling rate of the impurity in the double-well will then be correlated to excitations in the bath.

An optical dipole trap combined with a 2D-acousto-optic deflector setup allows further shaping of the trapping potentials. Imaging of the small number of impurity atoms will be achieved using fluorescence imaging in a near-detuned optical lattice.

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