Bonn 2025 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 5: Collective Effects and Disordered Systems

Q 5.6: Talk

Monday, March 10, 2025, 12:15–12:30, HS I PI

Dipole-dipole interactions of strongly driven two-level atoms — •Tim Ehret, Vyacheslav Shatokhin, and Andreas Buchleitner — Hermann-Herder-Str. 3, Institute of Physics, Albert-Ludwigs University of Freiburg

We formulate a Floquet-Markov master equation for two spatially separated atoms driven by an intense electromagnetic field and coupled to a common bath. This equation features a modified form of dipolar interactions as compared to the case of weakly driven atoms, giving rise to new shifts in the Floquet quasienergy spectrum of the system. We provide a detailed physical interpretation of the modified dipole-dipole interactions, discuss their manifestations in two-atom resonance fluorescence, and extract the distance-dependence of the dipole force between the atoms.

Keywords: Dipole-dipole interactions; Floquet-Markov master equation; Resonance fluorescence; Two-level atoms