| Issue |
EPL
Volume 151, Number 2, July 2025
|
|
|---|---|---|
| Article Number | 25001 | |
| Number of page(s) | 7 | |
| Section | Atomic, molecular and optical physics | |
| DOI | https://doi.org/10.1209/0295-5075/adf093 | |
| Published online | 31 July 2025 | |
Probing the geometry dependence of the Casimir-Polder interaction by matter-wave diffraction at a nanograting(a)
1 Laboratoire de Physique des Lasers, Université Sorbonne Paris Nord, CNRS UMR 7538 F-93430, Villetaneuse, France
2 Leibniz University of Hanover, Institute of Quantum Optics, QUEST-Leibniz Research School - Hanover, Germany
3 Laboratoire de Physique Théorique et Modèles Statistiques, CNRS UMR 8626, Université Paris-Saclay F-91405 Orsay cedex, France
Received: 9 May 2025
Accepted: 16 July 2025
Atomic diffraction through a nanograting is a powerful tool to probe the Casimir-Polder potential. Achieving precise measurements requires simulations to bridge theory and experiment. In this context, we present various approximations and methods of Casimir-Polder potentials, and we analyze their impact on matter-wave diffraction patterns. Our analysis includes the pairwise summation approach, the proximity force approximation, and multiple scattering expansion method. Furthermore, we demonstrate that the influence of Casimir-Polder interactions extends up to 25 nm before and after the nanograting slit, highlighting the importance of accounting for this effect in any accurate analysis.
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