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MUST2022 Conference- a great success!
New scientific highlights- by MUST PIs Wörner, Chergui, and Richardson
FELs of Europe prize for Jeremy Rouxel- “Development or innovative use of advanced instrumentation in the field of FELs”
Ruth Signorell wins Doron prizefor pioneering contributions to the field of fundamental aerosol science
New FAST-Fellow Uwe Thumm at ETH- lectures on Topics in Femto- and Attosecond Science
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New scientific highlight- by MUST PIs Milne, Standfuss and Schertler
EU XFEL Young Scientist Award for Camila Bacellar,beamline scientist and group leader of the Alvra endstation at SwissFEL
Prizes for Giulia Mancini and Rebeca Gomez CastilloICO/IUPAP Young Scientist Prize in Optics & Ernst Haber 2021
Nobel Prize in Chemistry awarded to RESOLV Member Benjamin List- for the development of asymmetric organocatalysis
NCCR MUST at Scientifica 2021- Lightning, organic solar cells, and virtual molecules
#NCCRWomen- NCCR MUST celebrates 50 years women’s right to vote in Switzerland

Toward experimental two-photon absorption with entangled photons

Date Do, 24.10.2013 - Do, 24.10.2013
Time 10.15
Speaker Stefan Lerch, Institute of Applied Physics, University of Bern
Location Universität Bern, Institut für Angewandte Physik, Gebäude exakte Wissenschaften, Hörsaal B116, Sidlerstrasse 5, 3012 Bern
Program In 1930, Maria Goeppert-Mayer predicted for the first time two-photon absorption (TPA). With femtosecond lasers it became possible to measure TPA. About 70 years later, the cross-section for two-photon absorption with entangled photons was theoretically introduced. We will present in particular the linear dependence of the two-photon absorption rate on the light intensity and the possibility to gain spectroscopic information out of it. It has been shown that it is even possible to resolve virtual states which contribute to the TPA but whose energies exceed the sum of the entangled photon energies. This phenomena is accordingly termed “Entangled-Photon Virtual-State Spectroscopy”. The second part of the talk focus on the experimental setup which will allow to measure entangled TPA on different absorbers, for instance fluorescent molecules or atomic Rubidium. By means of Zemax and Lab2 simulations, I will illustrate the work going on in order to improve the present setup of the entangled photon source and shaper.
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Link www.iap.unibe.ch
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