Modified dipole-dipole interaction and dissipation in an atomic ensemble near surfaces

Jones, Ryan and Needham, Jemma A. and Lesanovsky, Igor and Intravaia, Francesco and Olmos, Beatriz (2018) Modified dipole-dipole interaction and dissipation in an atomic ensemble near surfaces. Physical Review A, 97 (5). 053841/1-053841/13. ISSN 1094-1622

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Abstract

We study how the radiative properties of a dense ensemble of atoms can be modified when they are placed near or between metallic or dielectric surfaces. If the average separation between the atoms is comparable or smaller than the wavelength of the scattered photons, the coupling to the radiation field induces long-range coherent interactions based on the interatomic exchange of virtual photons. Moreover, the incoherent scattering of photons back to the electromagnetic field is known to be a many-body process, characterized by the appearance of superradiant and subradiant emission modes. By changing the radiation field properties, in this case by considering a layered medium where the atoms are near metallic or dielectric surfaces, these scattering properties can be dramatically modified. We perform a detailed study of these effects, with focus on experimentally relevant parameter regimes. We finish with a specific application in the context of quantum information storage,where the presence of a nearby surface is shown to increase the storage time of an atomic excitation that is transported across a one-dimensional chain.

Item Type: Article
Additional Information: ©2018 American Physical Society
Schools/Departments: University of Nottingham, UK > Faculty of Science > School of Physics and Astronomy
Identification Number: https://doi.org/10.1103/PhysRevA.97.053841
Depositing User: Olmos Sanchez, Beatriz
Date Deposited: 14 Jun 2018 10:41
Last Modified: 14 Jun 2018 16:25
URI: http://eprints.nottingham.ac.uk/id/eprint/52395

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