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arXiv · 2404.13354

Effects of higher-order Casimir-Polder interactions on Rydberg atom spectroscopy

Biplab Dutta·Joao Carlos de Aquino Carvalho·Guadalupe Garcia-Arellano·Paolo Pedri·Athanasios Laliotis·Chris Boldt·Jivesh Kaushal·Stefan Scheel
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Abstract

In the extreme near-field, when the spatial extension of the atomic wavefunction is no longer negligible compared to the atom-surface distance, the dipole approximation is no longer sufficient to describe Casimir-Polder interactions. Here we calculate the higher-order, quadrupole and octupole, contributions to Casimir-Polder energy shifts of Rydberg atoms close to a dielectric surface. We subsequently investigate the effects of these higher-order terms in thin-cell and selective reflection spectroscopy. Beyond its fundamental interest, this new regime of extremely small atom surface separations is relevant for quantum technology applications with Rydberg or surface-bound atoms interfacing with photonic platforms.

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Biplab Dutta, Joao Carlos de Aquino Carvalho, Guadalupe Garcia-Arellano, Paolo Pedri, Athanasios Laliotis, Chris Boldt, Jivesh Kaushal, Stefan Scheel. 2024-04-20. Effects of higher-order Casimir-Polder interactions on Rydberg atom spectroscopy. https://arxiv.org/abs/2404.13354

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