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Erlangen 2018 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 27: Quantum Gases (Bosons) III

Q 27.4: Talk

Monday, March 5, 2018, 17:00–17:15, K 2.020

Bottom-up approach to many-body physics with ultracold atoms in adjustable lattices — •Martin Sturm, Malte Schlosser, Gerhard Birkl, and Reinhold Walser — Institute for applied physics, TU Darmstadt, Darmstadt, Germany

Ultracold atoms in optical lattices have proven to be a powerful toolbox for quantum simulation of many-body physics. With the demonstration of single-site resolved imaging, local properties have shifted into the focus of this field. This development is complemented by the construction of double-well systems from single atoms in optical tweezers.

We present an experimental avenue to scalable and adjustable arrays of optical dipole traps using microlens arrays and spatial light modulators [1]. This setup closes the gap between the aforementioned approaches and allows for a bottom-up construction of many-body systems adding one atom at a time. In order to evaluate the experimental feasibility of this approach, we compute the accessible parameter regime for 7Li, 23Na, 41K, and 87Rb based on measurements and simulations of the light field. In addition, we investigate loading procedures starting from Bose-Einstein condensates as well as from low-entropy states in the deep Mott-insulator regime [2]. As a possible application, we analyze two coupled ring lattices that exhibit many-body resonances in their tunneling dynamics.

M. R. Sturm et al., Phys. Rev. A 95 063625 (2017)
M. R. Sturm et al., to be published.

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