Author Archives: Sebastian

First glow of Ytterbium

We just observed the first fluorescence of Yb in the vacuum chamber of our new experiment: the fuzzy white line in the photo is caused by hot Yb atoms scattering light from a 399nm beam.  Now that we know that there is Yb vapor in our chamber, we will proceed to laser-cooling these atoms with multiple beams.

Advanced SRITP and GiRYD school at Weizmann

The school on Giant Interactions in Rydberg Systems brought together 15 invited speakers as well as over 30 participants from all over the world, with the core group being PhD students from the DFG funded priority programme GiRYD.

From us, Nina and Julia participated as students, while Sebastian was there as one of the organizers. All in all, it seems to have been a great success for both sides.

Advanced SRITP and GiRYD School in Israel

Back in business

Within 6 months, we have rebuilt our Rydberg apparatus from scratch in our new lab. What was a completely empty room in early April is now the coolest place (2 μK) at SDU. We are currently putting the last touches on our Rydberg excitation system, then we are ready to go! You can see some pictures from the new lab and of the first steps towards single-photon interaction at SDU here.

New Master Student

Nina Stiesdal has joined us as the first new Master student at our new home SDU. She will join the Rydberg superatom experiment for the next 10 months! Velkommen til holdet!

Results on EIT with Rydberg molecules published in PRA

Our work investigating the role of Rydberg molecules in storage and retrieval of single photons has been published in PRA:

I. Mirgorodskiy, F. Christaller, C. Braun, A. Paris-Mandoki, C. Tresp and S. Hofferberth,
”Electromagnetically induced transparency of ultra-long-range Rydberg molecules”
Phys. Rev. A, 96, 011402 (2017)

Very similar results had previously been observed in the MPQ Quantum Dynamics group!