Tailored optical potentials for Cs atoms above waveguides with focusing dielectric nano-antenna

Angeleene S. Ang, Alexander S. Shalin, Alina Karabchevsky

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


Tuning the near field using all-dielectric nano-antennas offers a promising approach for trapping atoms, which could enable strong single-atom-photon coupling. Here we report the numerical study of an optical trapping of a single Cs atom above a waveguide with a silicon nano-antenna, which produces a trapping potential for atoms in a chipscale configuration. Using counter-propagating incident fields, bichromatically detuned from the atomic cesium D-lines, we numerically investigate the dependence of the optical potential on the nano-antenna geometry. We tailor the near-field potential landscape by tuning the evanescent field of the waveguide using a toroidal nano-antenna, a configuration that enables trapping of ultracold Cs atoms. Our research opens up a plethora of trapping atoms applications in a chip-scale manner, from quantum computing to quantum sensing, among others.

Original languageEnglish
Pages (from-to)3512-3515
Number of pages4
JournalOptics Letters
Issue number13
StatePublished - 1 Jul 2020

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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