An ultracold gas plus an ion! In our project, we plan to realize a new-generation atom-ion machine in order to realize new quantum simulations of a many-body system in the presence of one or more localized impurities. With this setup, we plan to investigate fundamental atom-ion interactions in the ultracold regime, and to use these controlled interactions to realize a platform for investigating out-of-equilibrium quantum systems and quantum thermodynamics.

A new design of a Littrow-type ECDL has been patented

We report on our patented Littrow-type external cavity diode laser (ECDL) in which the coarse wavelength adjustment obtained via the rotation of a diffraction grating is decoupled from the fine tuning of the cavity modes done with changes in the external cavity length. This design improves the robustness of the ECDL emission against misalignment and hysteresis, even for the case of long external cavity lasers typically employed in optical clock experiments.

L. Duca, et al.
Design of a Littrow-type diode laser with independent control of cavity length and grating rotation
Opt. Lett. 46, 2840 (2021)

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