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Hannover 2020 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 18: Ultracold atoms, ions, and BEC III (joint session A/Q)

Q 18.2: Vortrag

Dienstag, 10. März 2020, 14:30–14:45, f303

Cavity-Enhanced Microscope for Cold Atoms — •Tigrane Cantat-Moltrecht, Nick Sauerwein, and Jean-Philippe Brantut — LQG EPFL, Lausanne, Switzerland

We are setting up a novel type of microscope consisting of an ultra-cold Fermi gas of Lithium 6 atoms in a high-finesse cavity, combined with high-numerical-aperture optics (0.38).

Atoms in the cavity can be detected through their dispersive interaction with light. A second laser beam, focused tightly onto the lithium cloud, locally enhances the coupling of the atoms to the cavity, allowing for non-destructive measurements with sub-micron resolution. Controlling this coupling will also allow to tune the cavity-mediated interactions temporally and spatially, paving the way for novel schemes of quantum simulation of random all-to-all interactions between fermions.

Currently, the core of the optical system has been fully characterized and the vacuum and laser system are operational. I will summarize the important ideas and technical developments behind the design, present the current status of our setup and the next steps towards a working "cavity-microscope".

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DPG-Physik > DPG-Verhandlungen > 2020 > Hannover