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

• URL: http://arxiv.org/abs/2404.13354v1
• Date: Sat, 20 Apr 2024 11:29:38 GMT
• Title: Effects of higher-order Casimir-Polder interactions on Rydberg atom spectroscopy
• Authors: Biplab Dutta, Joao Carlos de Aquino Carvalho, Guadalupe Garcia-Arellano, Paolo Pedri, Athanasios Laliotis, Chris Boldt, Jivesh Kaushal, Stefan Scheel,
• Abstract summary: We calculate the higher-order, quadrupole and octupole, contributions to Casimir-Polder energy shifts. This new regime of extremely small atom surface separations is relevant for quantum technology applications with Rydberg or surface-bound atoms.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• 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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