Hannover 2016 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 58: Poster: Quantum Optics and Photonics IV
Q 58.77: Poster
Donnerstag, 3. März 2016, 16:30–19:00, Empore Lichthof
Towards single site single atom imaging of 6Li atoms in an optical honeycomb potential — Stephan Maier, •Stefan Häußler, Thomas Paintner, Daniel Hoffmann, Wladimir Schoch, Wolfgang Limmer, and Johannes Hecker Denschlag — Institute for Quantum Matter, Ulm University, Albert-Einstein-Allee 45, 89081, Ulm, Germany
We are setting up a fermionic quantum gas experiment with ultracold 6Li atoms in the quasi two-dimensional regime. The gas will be structured with an optical honeycomb potential, projected with a high resolution objective. Such a system should enable us to investigate interesting phases of the fermionic ensemble at different lattice parameters and interaction strengths. For detection we will implement single site fluorescence imaging of the particles.
Since the fluorescence detection leads to heating of the atoms due to light scattering, thermal hopping of the atoms in the lattice can occur. To suppress this effect during detection, we will make use of a Raman sideband cooling technique as shown in [1].
The Raman cooling scheme, which is used to reduce the thermal energy of the particles in the honeycomb potential and simultaneously delivers the spontaneously emitted photons for the fluorescence imaging is presented here, as well as the required laser setup, which includes a 10 GHz offset frequency locking scheme and a digital feedback control based on a wavelengthmeter. Using this locking scheme first experimental results on Raman spectroscopy are presented.
- [1] M. Greiner: Phys. Rev. Let. 114, Nr. 213002 (2015)