Heidelberg 2015 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 18: Poster: Ultra-cold atoms, ions and BEC (with Q)

A 18.32: Poster

Dienstag, 24. März 2015, 17:00–19:00, C/Foyer

Phase-Imprinting through Rydberg DressingRick Mukherjee1, Cenap Ates2, Weibin Li2, and •Sebastian Wüster11Max Planck Institute for the Physics of Complex Systems, Nöthnitzer Strasse 38, 01187 Dresden, German — 2School of Physics and Astronomy, University of Nottingham, Nottingham, NG7 2RD, UK

We show how the phase profile of Bose-Einstein condensates can be engineered through its interactions with suitably placed Rydberg excitations. The interaction is made controllable and long-range by off-resonantly coupling the condensate to another Rydberg state as in [1], which will dominate over direct interactions between condensate atoms and Rydberg electrons [2].

Our technique allows the mapping of entanglement generated in systems of few strongly interacting Rydberg atoms onto much larger atom clouds in hybrid setups. As an example we discuss the creation of a spatial mesoscopic superposition state from a bright soliton. Additionally, the phase imprinted onto the condensate using the Rydberg excitations can be used to infer the locations of the latter. We investigate the resulting link between condensate momentum distributions and different embedded Rydberg crystal patterns.

[1] N. Henkel et al. Phys. Rev. Lett. 104, 195302 (2010).

[2] J. B. Balewski et al. Nature 502, 664 (2013)

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