SAMOP 2023 – scientific programme
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A: Fachverband Atomphysik
A 4: Quantum Effects (QED) (joint session Q/A)
A 4.1: Talk
Monday, March 6, 2023, 11:00–11:15, F442
In the eye of the beholder: Interference in multi-atom dynamics — •Stefan Yoshi Buhmann1 and Janine Franz1,2 — 1University of Kassel, Germany — 2University of Freiburg, Germany
The Casimir–Polder force between an excited with a ground-state atom had been subject to an old controversy: Does its distance dependence exhibit oscillations due to interference [1] or not [2]? A time-dependent analysis of this scenario has revealed that the correct answer is a matter of perspective: the force on the excited atom does oscillate while that on the ground-state atom does not [3].
We complete this picture by studying the rate with which the excitation of the atom gets lost or is transferred to the ground-state atom, considering a range of channels: environment-assisted spontaneous decay, resonance energy transfer, and Auger decay. Again, we find that the correct answer depends on the perspective and hence the specific process considered.
[1] L. Gomberoff, R. R. McLone, and E. A. Power, J. Chem. Phys. 44, 4148 (1966).
[2] E. A. Power and T. Thirunamachandran, Phys. Rev. A 47, 2539 (1993).
[3] P. Barcellona, R. Passante, L. Rizzuto, and S. Y. Buhmann, Phys. Rev. A 94, 012705 (2016).