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.
We had the great pleasure of showing our labs to a visiting delegation from the Villum Foundation yesterday. It is always very satisfying to showcase the results of the hard work in the lab to visitors!
There are some Rydberg atoms on this month’s cover of the Physik Journal! There is also an article reviewing many-body physics with Rydberg atoms by Christian Gross and Sebastian inside! Small caveat: it’s all in German!
If that does not scare you off, you can find the article here.
We are participating for the first time in the “Book a scientist” program which is part of Forskningens Døgn.
You can book a showing of our single-photon interferometer in your home/workplace/summer house in week 18. We look forward to showing you a little bit of quantum mechanics live.
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
Our paper on three-photon correlations mediated by a single Rydberg superatom has been published in Phys. Rev. Letters! It can also be found on the arXiv.
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.
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!
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!
Together with Ofer Firstenberg and Charles Adams, we have submitted a review on Rydberg EIT to the upcoming special issue “Rydberg atomic physics” in Journal of Physics B.
You can find the preprint on the arXiv: arXiv:1602.06117