Berlin 2014 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 16: Poster: Quantum information, micromechanical oscillators, matter wave optics, precision measurements and metrology
Q 16.38: Poster
Montag, 17. März 2014, 16:30–18:30, Spree-Palais
Quantum dynamics of an ion controlled bosonic Josephson junction — •Jannis Joger1, Antonio Negretti2, Ferdinand Schmidt-Kaler1, and Rene Gerritsma1 — 1Institut für Physik, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany — 2Zentrum für Optische Quantentechnologien, Universität Hamburg, The Hamburg Centre for Ultrafast Imaging, Luruper Chaussee 149, D-22761 Hamburg
We theoretically investigate the dynamics of an atomic Josephson junction formed by a double-well potential with a single trapped ion in the center. We found before that the ion can coherently control the atomic tunneling rate in the junction by its spin [1]. On this poster, we show that it should also be possible to control the tunneling using the motion of the ion. This can lead to large matterwave-ion entangled states in which the position of the matterwave is entangled with the ion. We analyze the effect of imperfections such as in residual thermal ion motion and Paul-trap induced micromotion. We aim to implement this scheme in a combined atom-ion microtrap that is currently being built. This setup will also allow studying atom-ion interactions in the 1-dimensional regime.
[1] R. Gerritsma et al. Phys. Rev. Letters 109, 080402 (2012).