Enhanced optical cross section via collective coupling of atomic dipoles in a 2D array

Enhancing the optical cross section is an enticing goal in light-matter interactions, due to its fundamental role in quantum and non-linear optics. Here, we show how dipolar interactions can suppress off-axis scattering in a two-dimensional atomic array, leading to a subradiant collective mode where...

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Bibliographic Details
Published inarXiv.org
Main Authors Bettles, Robert J, Gardiner, Simon A, Adams, Charles S
Format Paper Journal Article
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 10.03.2016
Subjects
Cross-sections
Dipoles
Extinction
Lattice vacancies
Nonlinear optics
Physics - Atomic Physics
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Summary:Enhancing the optical cross section is an enticing goal in light-matter interactions, due to its fundamental role in quantum and non-linear optics. Here, we show how dipolar interactions can suppress off-axis scattering in a two-dimensional atomic array, leading to a subradiant collective mode where the optical cross section is enhanced by almost an order of magnitude. As a consequence, it is possible to attain an optical depth which implies high fidelity extinction, from a monolayer. Using realistic experimental parameters, we also model how lattice vacancies and the atomic trapping depth affect the transmission, concluding that such high extinction should be possible, using current experimental techniques.
ISSN:2331-8422
DOI:10.48550/arxiv.1510.07855