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Measurement of the atom-surface van der Waals interaction by transmission spectroscopy in a wedged nanocell.

Peyrot, T. and Šibalić, N. and Sortais, Y. R. P. and Browaeys, A. and Sargsyan, A. and Sarkisyan, D. and Hughes, I. G. and Adams, C. S. (2019) 'Measurement of the atom-surface van der Waals interaction by transmission spectroscopy in a wedged nanocell.', Physical review A., 100 (2). 022503.

Abstract

We demonstrate a method for measuring atom-surface interactions using transmission spectroscopy of thermal vapors confined in a wedged nanocell. The wedged shape of the cell allows complementary measurements of both the bulk atomic vapor and atoms close to surfaces experiencing strong van der Waals atom-surface interaction. These are used to tightly constrain the dipole-dipole collisional parameters of a theoretical model for transmission spectra that accounts for atom-surface interactions, cavity effects, collisions with the surface of the cell, and atomic motion. We illustrate this method on a cesium vapor in a sapphire cell, demonstrating that even the weakest of the van der Waals atom-surface interaction coefficients—for ground-state alkali atom transitions—can be determined with a very good precision. This result paves the way towards a precise quantitative characterization of atom-surface interactions in a wide range of atom-based nanodevices.

Item Type:Article
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Status:Peer-reviewed
Publisher Web site:https://doi.org/10.1103/PhysRevA.100.022503
Publisher statement:Reprinted with permission from the American Physical Society: [Peyrot, T., Šibalić, N., Sortais, Y. R. P., Browaeys, A., Sargsyan, A., Sarkisyan, D., Hughes, I. G. & Adams, C. S. (2019). Measurement of the atom-surface van der Waals interaction by transmission spectroscopy in a wedged nanocell. Physical Review A 100(2): 022503 © 2019 by the American Physical Society. Readers may view, browse, and/or download material for temporary copying purposes only, provided these uses are for noncommercial personal purposes. Except as provided by law, this material may not be further reproduced, distributed, transmitted, modified, adapted, performed, displayed, published, or sold in whole or part, without prior written permission from the American Physical Society.
Date accepted:No date available
Date deposited:08 August 2019
Date of first online publication:01 August 2019
Date first made open access:08 August 2019

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