Erlangen 2022 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 55: Quantum Effects III
Q 55.4: Talk
Thursday, March 17, 2022, 14:45–15:00, Q-H13
Anisotropy of multiple quantum fluorescence signals — •Friedemann Landmesser1, Ulrich Bangert1, Lukas Bruder1, Edoardo Carnio1,2, Mario Niebuhr1, Vyacheslav Shatokhin1,2, Andreas Buchleitner1,2, and Frank Stienkemeier1 — 1Institute of Physics, University of Freiburg, Germany — 2EUCOR Centre for Quantum Science and Quantum Computing, University of Freiburg, Germany
We investigate collective effects in thermal atomic alkali vapors by multiple-quantum coherence experiments, where multiphoton processes can be separated from one-photon transitions and can be assigned to specific particle numbers [1, 2]. The technique is sensitive enough to reveal weak interparticle interactions, despite the thermal motion and the spatial separation of the atoms in the micrometer-range [3]. We experimentally investigate the dependence of such signals on the laser polarization, which was previously predicted theoretically for a similar physical system [4].
[1] L. Bruder et al., Phys. Rev. A 92, 053412 (2015).
[2] S. Yu et al., Opt. Lett. 44, 2795 (2019).
[3] L. Bruder et al., Phys. Chem. Chem. Phys. 21, 2276 (2019).
[4] B. Ames et al., J. Chem. Phys. 155, 44306 (2021).