Hannover 2013 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 35: Poster I

Q 35.92: Poster

Dienstag, 19. März 2013, 16:00–18:30, Empore Lichthof

Aharonov-Casher effect for dark state polaritons — •Vladimir Djokic, Frank Vewinger, and Martin Weitz — Wegelerstr. 8, D-53115 Bonn, Germany

Dark state polaritons, quasiparticles with a photonic contribution and an atomic spin-wave component, exhibit a nonvanishing effective magnetic moment due to the spin-wave contribution. As has been pointed out by Aharonov and Casher, magnetic moments can lead to a topological phase shift when the particle is moving around a charged wire, the Aharonov-Casher phase.

We report on the status of an ongoing experiment aiming at a measure of the Aharonov-Casher phase in dark state polaritons in Rb 87. This set up allows the measurement of the differential phase shift between two polariton components, making the system robust against perturbations.