Hannover 2020 – scientific programme
The DPG Spring Meeting in Hannover had to be cancelled! Read more ...
Parts | Days | Selection | Search | Updates | Downloads | Help
Q: Fachverband Quantenoptik und Photonik
Q 14: Precision Measurements and Metrology
Q 14.5: Talk
Tuesday, March 10, 2020, 12:00–12:15, a310
Lifetime Measurement of the Cesium 5D5/2 State with Open Data Availability — •Sebastian Pucher1,2, Philipp Schneeweiss1,2, Arno Rauschenbeutel1,2, and Alexandre Dareau1,3 — 1Vienna Center for Quantum Science and Technology, TU Wien – Atominstitut, Stadionallee 2, 1020 Vienna, Austria — 2Institut für Physik, Humboldt-Universität zu Berlin, Newtonstraße 15, 12489 Berlin, Germany — 3Laboratoire Charles Fabry, Institut d’Optique Graduate School, CNRS, Université Paris-Saclay, 91127 Palaiseau cedex, France
We measure the lifetime of the cesium 5D5/2 state using a time-resolved single-photon-counting method. We excite atoms in a hot vapor cell via an electric quadrupole transition at a wavelength of 685 nm and record the fluorescence of a cascade decay at a wavelength of 852 nm. We extract a lifetime of the 5D5/2 state of 1356(9) ns. Our value clearly deviates from the previous experimental literature values [1, 2] but is very well in agreement with a recent theoretical prediction [3]. As we also discuss in the talk, we aim to further improve the transparency of studies of this kind by sharing our measurement outcomes and evaluations via an open-access repository.
[1] D. DiBerardino et al., Phys. Rev. A 57, 4204 (1998)
[2] B. Hoeling et al., Opt. Lett. 21, 74 (1996)
[3] M.S. Safronova et al., Phys. Rev. A 94, 012505 (2016)