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Q: Fachverband Quantenoptik und Photonik

Q 27: Poster – Ultra-cold Atoms, Ions and BEC (joint session A/Q)

Q 27.11: Poster

Dienstag, 11. März 2025, 14:00–16:00, Tent

Transport of single atoms through an ultracold bath in an accelerated optical lattice — •Silvia Hiebel, Julian Feß, Sabrina Burgardt, and Artur Widera — Department of Physics and Research Center OPTIMAS, University of Kaiserslautern-Landau, Erwin Schrödinger Str. 46, 67663 Kaiserslautern, Germany

Diffusion, a fundamental transport phenomenon, plays a significant role across nearly all physical systems. While extensively studied in classical contexts, transport phenomena in ultracold gases of neutral atoms remain relatively underexplored. At the same time, diffusion under external forces provides critical insights into transport phenomena in complex systems. Quantum gases, with their high degree of controllability and observable dynamics, offer a unique platform to investigate these processes.

Here, we present a system for observing the one-dimensional transport dynamics of single atoms in tilted optical lattices. Our optical system enables precise control of lattice parameters such as depth, velocity, and acceleration, facilitating the application of tunable external forces. Additionally, the system includes a thermal bath of ultracold rubidium atoms, which provides a controlled environment for introducing friction and interactions with open systems.

Keywords: diffusion; single atoms