Hannover 2016 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 11: Poster: Quantum Optics and Photonics I

Q 11.5: Poster

Monday, February 29, 2016, 16:30–19:00, Empore Lichthof

Imaging of Single Atoms in a Two-Dimensional State-Dependent Optical Lattice — •Volker Schilling, Stefan Brakhane, Geol Moon, Carsten Robens, Wolfgang Alt, Andrea Alberti, and Dieter Meschede — Institute of Applied Physics, Bonn, Germany

Detecting photons in a large solid angle is crucial for fast imaging in ultra-cold atom experiments. In the quantum technologies group in Bonn, we are currently building up a new experiment containing our in-house built high numerical aperture (NA = 0.92) in-vacuum objective which enables single site resolution of neutral caesium atoms in a two-dimensional state-dependent optical lattice. We prepare single caesium atoms in the lattice at a working distance of 150µm in front of the high-NA objective inside a dodecagonal ultra-low birefringence vacuum glass cell [1]. The high-NA objective is characterised by analysing the fluorescence signal coming from single caesium atoms. The experimental configuration and the state-dependent transport in two independent dimensions is presented. The high-NA imaging system in combination with the two-dimensional state-dependent optical lattice will provide fast image acquisition after simulation of complex physical phenomena, for instance, artificial magnetic fields by means of discrete-time quantum walks in two dimensions.

[1] Stefan Brakhane et. al., Ultra-low birefringence dodecagonal vacuum glass cell, Submitted (2015)