Fakultät für Physik und Astronomie
STEPHEN PHILLIPS hostreviews.co.uk / UNSPLASH

From Polar Bear Selfies to Quantum Science

Yannis Arck , KIP Heidelberg

What does a selfie with a polar bear have to do with applied quantum optical science? If you cannot think of a link immediately, then come and join this talk! I will take you on a wonderful journey into the Arctic Ocean and present some interesting research there. We will dive right into the physical oceanography of this unique place on Earth and I will provide some background information on environmental physics. The scientific focus will be on water samples from different areas of the Arctic Ocean and special emphasis is given on the water age and ventilation processes. And here comes the quantum science into play. With the Atom Trap Trace Analysis (ATTA) Method it is possible to date ocean water in a novel way. For the time scale of ocean ventilation, the radioactive argon isotope 39Ar is favorable because of its half-life of 268 years. The problem is the relative abundance of 39Ar to all argon which is only in the order of 10-16. ATTA tackles this issue by selectively catching and counting single 39Ar atoms. After a plasma source discharge the desired 39Ar atoms are slowed down in a Zeeman slower by laser cooling and are eventually caught in a magneto-optical trap. This method is superior to decay counting because it requires a much smaller sample size and processes it quicker. This talk will show some new results in the Arctic Ocean using ATTA. Of course, nice pictures and witty anecdotes about the corresponding research cruise from summer 2021 is presented as well.

Cold Quantum Coffee
30 Apr 2024, 16:15
Institut für Theoretische Physik, Phil16

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