Hannover 2020 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 45: Quantum Effects (QED) II

Q 45.1: Talk

Thursday, March 12, 2020, 11:00–11:15, f442

Quantum friction and internal atomic dynamics — •Nico Strauß and Stefan Yoshi Buhmann — Albert-Ludwigs-Universität Freiburg

The Casimir-Polder force between atoms is of quantum mechanical origin and forms the basis of quantum friction, which is predicted to occur when two objects move at distance on the order of a few tens of nanometers relative to each other. In this presentation, we consider the effects of this force on the energy levels of atoms and their velocity dependence as well as that of the resulting transition frequencies [1]. We investigated how this frequency dependence can be observed in the experiments of M. Ducloy and M. Fichet [2] by measuring the changes in the reflection coefficients of a modulated laser beam incident on the boundary between a dielectric and a gas moving atoms.

[1] J. Klatt, R. Bennett and S. Y. Buhmann, Phys. Rev. A 94, 063803 (2016).

[2] M. Ducloy and M. Fichet, J. Phys. II, 1529 (1991).