Heidelberg 2015 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 15: Poster: Quantum Optics and Photonics I

Q 15.92: Poster

Monday, March 23, 2015, 17:00–19:00, C/Foyer

Precision polarimeter for state-dependent optical lattices — •Muhammad Sajid, Dieter Meschede, Andrea Alberti, Stefan Brakhane, and Wolfgang Alt — Institut f\"ur Angewandte Physik der Universit\"at Bonn, Wegelerstr. 8, 53115 Bonn

State-dependent optical lattices for single neutral atoms are a key component in the experimental realization of discrete-time quantum walks [1], which can be used to simulate complex physical systems [2]. A polarization based state-dependent lattice requires the dynamical synthesization of arbitrary polarization states of the laser beams forming the lattice with a very high precision.

We will report on a rotating quarter-wave-plate Stokes polarimeter that will be used as an independent measure of the lattice polarization in order to monitor the polarization synthesis. The benefit of such a dynamical polarimeter with a single photo detector consists in the absence of calibration errors between different detectors which are used in static polarimeters.

References: [1] M. Karski et al. Quantum Walk in Position Space with Single Optically Trapped Atoms, Science 325, 174 (2009). [2] M. Genske et al. Electric quantum walks with individual atoms, Phys. Rev. Lett. 110, 190601 (2013)