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Article Dans Une Revue Communications Physics Année : 2023

Single atom in a superoscillatory optical trap

Hamim Mahmud Rivy
  • Fonction : Auteur
Syed Aljunid
Emmanuel Lassalle
Nikolay Zheludev
  • Fonction : Auteur
David Wilkowski

Résumé

Abstract Optical tweezers have become essential tools to manipulate atoms or molecules at a single particle level. However, using standard diffraction-limited optical systems, the transverse size of the trap is lower bounded by the optical wavelength, limiting the application range of optical tweezers. Here we report trapping of single ultracold atom in an optical trap that can be continuously tuned from a standard Airy focus to a subwavelength hotspot smaller than the usual Abbe’s diffraction limit. The hotspot was generated using the effect of superoscillations, by the precise interference of multiple free-space coherent waves. We argue that superoscillatory trapping and continuous potential tuning offer not only a way to generate compact and tenable ensembles of trapped atoms for quantum simulators but will also be useful in single molecule quantum chemistry and the study of cooperative atom-photon interactions within subwavelength arrays of quantum emitters.

Dates et versions

hal-04419679 , version 1 (26-01-2024)

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Citer

Hamim Mahmud Rivy, Syed Aljunid, Emmanuel Lassalle, Nikolay Zheludev, David Wilkowski. Single atom in a superoscillatory optical trap. Communications Physics, 2023, 6 (1), pp.155. ⟨10.1038/s42005-023-01271-4⟩. ⟨hal-04419679⟩
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