Dresden 2011 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 10: Quantum Gases: Bosons 2

Q 10.1: Talk

Monday, March 14, 2011, 14:30–14:45, HÜL 386

Non-Equilibrium Dynamics of 1d Bose Gases Studied via Quantum Noise Distributions — •Tim Langen, Michael Gring, Maximilian Kuhnert, David Alexander Smith, and Jörg Schmiedmayer — Atominstitut, Technische Universität Wien, 1020 Wien, Österreich

The non-equilibrium dynamics of many-body quantum systems is at the center of many fundamental questions such as decoherence, phase transitions and transport phenomena. Here we present a first test of the use of quantum noise distributions to study the dynamics of such systems. We employ a coherently split one-dimensional ultracold Bose gas, which provides a highly non-equilibrium state that is easily accessible and offers a striking example of the effects of interactions on correlated many-body systems. By mapping noise distributions at different length scales of the system, we demonstrate that the multimode character and enhanced role of fluctuations in one-dimensional systems play a dramatic role in the resultant non-equilibrium dynamics.