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

Bettles, Robert J. and Gardiner, Simon A. and Adams, Charles S. (2016) 'Enhanced optical cross section via collective coupling of atomic dipoles in a 2D array.', Physical review letters., 116 (10). p. 103602.

Abstract

Enhancing the optical cross section is an enticing goal in light-matter interactions, due to its fundamental role in quantum and nonlinear 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.

Item Type:Article
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Status:Peer-reviewed
Publisher Web site:http://dx.doi.org/10.1103/PhysRevLett.116.103602
Publisher statement:This article is available under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.
Date accepted:09 February 2016
Date deposited:11 March 2016
Date of first online publication:09 March 2016
Date first made open access:11 March 2016

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