Enhanced Optical Cross Section via Collective Coupling of Atomic Dipoles in a 2D Array.

Phys Rev Lett

Department of Physics, Joint Quantum Center (JQC) Durham-Newcastle, Durham University, South Road, Durham DH1 3LE, United Kingdom.

Published: March 2016

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.

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http://dx.doi.org/10.1103/PhysRevLett.116.103602DOI Listing

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