Freiburg 2024 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 24: Poster II

Q 24.24: Poster

Dienstag, 12. März 2024, 17:00–19:00, KG I Foyer

Heidelberg Quantum Architecture: Highly controlled light potentials in a 2D Fermi gas — •Johanna Schulz, Juan Carlos Provencio Lameiras, Suraj Iyer, Tobias Hammel, Maximilian Kaiser, Matthias Weidemüller, and Selim Jochim — Physikalisches Institut - Heidelberg University, Heidelberg, Germany

Heidelberg Quantum Architecture (HQA) is a new ⁶Li quantum gas experiment providing a fast, versatile, and expandable experimental platform for programmable quantum simulation. In this poster we present two optical modules that allow for creating various potentials, an accordion lattice and a Digital Micromirror Device.

A lot of interesting physics arises in lower-dimensional systems and in the crossover between dimensions. Going to 2D can be conducted using an optical accordion that creates an interference pattern with tuneable lattice spacing between 1.2µm and 15µm. That way, we can create quickly varying potentials, allowing for optimized loading and wide control of the 2D system. This we realize in a highly compactified optical module increasing stability and enhancing maintainability.

To generate nicely controllable light potentials, one can use, among other devices, a digital micromirror device (DMD). We present an exceptionally compact setup to create arbitrary potentials. One physical system that we want to simulate is a box potential in a scale of up to 200µm and as small as 50µm to confine the atoms.

Keywords: HQA