Berlin 2014 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 27: Quantum gases: Bosons II

Q 27.4: Vortrag

Dienstag, 18. März 2014, 14:45–15:00, UDL HS2002

Quantum-Zeno effect in an one-dimensional optical lattice with localized dissipation — •Ralf Labouvie, Andreas Vogler, Simon Heun, Bodhaditya Santra, and Herwig Ott — Fachbereich Physik and Research Center OPTIMAS, Technische Universität Kaiserslautern, 67663 Kaiserslautern, Germany

In our experiment we investigate the dynamics of an out-of-equilibrium system under the influence of localized particle loss. At the beginning we prepare a 87Rb Bose-Einstein-Condensate (BEC) which is loaded into an one-dimensional optical lattice. We start the experiment by removing all atoms from one of the central sites with the help of a tightly focused electron beam. After preparing this non-equilibrium state we allow for refilling dynamics while continuously probing the emptied site with the electron beam. The ionized atoms are detected and thus allow us to measure the time evolution of the system. We observe the complete suppression of tunneling at high dissipation rates which can be explained by means of a dissipation-induced Quantum-Zeno-effect.