Lensing and enhanced single atom detection via a single-pixel nanostructure
- URL: http://arxiv.org/abs/2608.20032v1
- Date: Thu, 20 Aug 2026 13:40:35 GMT
- Title: Lensing and enhanced single atom detection via a single-pixel nanostructure
- Abstract summary: We propose and demonstrate a general mechanism for nanoscale lensing based on the phase gradient imposed by a single nanostructure scattering light in its near-field.<n>We verify this effect using an optical waveguide on a substrate, with single atoms serving as quantum probes that sample the near-field intensity through their fluorescence.
- Score: 14.183821071729595
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: We propose and demonstrate a general mechanism for nanoscale lensing based on the phase gradient imposed by a single nanostructure scattering light in its near-field. We verify this effect using an optical waveguide on a substrate, with single atoms serving as quantum probes that sample the near-field intensity through their fluorescence. This quantum probing technique provides a unique, non-destructive approach to characterizing focused optical fields and reveals a 4-fold enhancement in single atom detection efficiency. This work establishes on-chip nanostructures as a multi-functional quantum optics platform that can efficiently route photons, localize fields, and enhance atom-photon coupling, offering new opportunities for trapping and manipulating single atoms and realizing hybrid nanophotonic-atomic systems for quantum applications.
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