Special Groop Seminar via Zoom: Fractal-like nanomechanical resonators with ultralow dissipation
Quantum gas microscopy of highly dipolar gases of Erbium

Robin Groth, Greiner Lab, Harvard University
Group Seminar via video conference (Zoom)
Tuesday, September 2nd, 4:00 p.m (MEZ)

Due to the Covid-19 pandemic, we are now holding our group seminars and journal clubs via video conference.This procedure enables us to continue our research, enhance discussions and exchange important information.

Abstract:

My talk will be divided into two parts. In the first part, I will discuss a novel design for nanomechanical resonators featuring ultralow dissipation. Low- dissipation nanomechanical resonators are of great importance for various appli- cations including high-sensitivity force sensors, displacement measurements and optomechanics experiments in the quantum regime. The novel resonator design is based on a fractal-like geometry which leads to a suppression of boundary losses and enables these resonators to reach quality factors as high as 109 at 100kHz.
In the second part, I will present recent progress towards single-site imaging of dipolar Erbium gases. The quantum gas microscope features a high-resolution imaging system, a low-disorder optical lattice, and an accordion lattice with tuneable spacing. High-resolution imaging is realized via a custom, in-vacuum objective with diffraction-limited performance across a large field of view. These features make the experiment an ideal platform for quantum simulation of ultracold atoms in optical lattices with long-range, tuneable and anisotropic interactions.

If you would like to join our group seminars via Zoom, please contact us for more information.