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Seminars
August 4, 2025
SEMINAR: Yet another strontium quantum gas microscope

Hour: From 15:00h to 16:00h

Place: Elements Room

SEMINAR: Yet another strontium quantum gas microscope

FELIX FAISANT
Institut d'Optique, Palaiseau

In this seminar, I will give an overview of the quantum gas microscope built at LCF / Institut d'Optique. This talk will mostly focus on the design choices and key technical aspects. While we use strontium, as is done here in Leticia's team, there are substantial differences in the preparation, trapping and imaging of the gas. In particular, optical trapping uses 1064nm light, which presents a challenge due to the generally unfavorable polarizabilities at this wavelength. I will briefly discuss polarizability tuning and lattice characteristics. The vacuum chambers and microscopy optical setup are also different. In particular, we use a single in-vacuum aspheric lens to image the gas. I will also present our approach for the confinement and preparation of the 2D gas. I will show the first microscopy images that we recently obtained, and discuss the remaining challenges. If time permits, I will mention the problems we want to investigate with this experiment, namely critical and out-of-equilibrium behavior in the 2D Bose-Hubbard model.

Hosted by Prof. Dr. Leticia Tarruell
Seminars
August 4, 2025
SEMINAR: Yet another strontium quantum gas microscope

Hour: From 15:00h to 16:00h

Place: Elements Room

SEMINAR: Yet another strontium quantum gas microscope

FELIX FAISANT
Institut d'Optique, Palaiseau

In this seminar, I will give an overview of the quantum gas microscope built at LCF / Institut d'Optique. This talk will mostly focus on the design choices and key technical aspects. While we use strontium, as is done here in Leticia's team, there are substantial differences in the preparation, trapping and imaging of the gas. In particular, optical trapping uses 1064nm light, which presents a challenge due to the generally unfavorable polarizabilities at this wavelength. I will briefly discuss polarizability tuning and lattice characteristics. The vacuum chambers and microscopy optical setup are also different. In particular, we use a single in-vacuum aspheric lens to image the gas. I will also present our approach for the confinement and preparation of the 2D gas. I will show the first microscopy images that we recently obtained, and discuss the remaining challenges. If time permits, I will mention the problems we want to investigate with this experiment, namely critical and out-of-equilibrium behavior in the 2D Bose-Hubbard model.

Hosted by Prof. Dr. Leticia Tarruell