Controlling photon bunching and antibunching of two quantum emitters near a core-shell sphere

The collective spontaneous emission of two point-dipole emitters near a plasmonic core-shell nanosphere is theoretically investigated. Based on the expansion of mode functions in vector spherical harmonics, we derive closed analytical expressions for both the cooperative decay rate and the dipole-di...

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Bibliographic Details
Published in:arXiv.org 2020-02
Main Authors: Arruda, Tiago J, Bachelard, Romain, Weiner, John, Slama, Sebastian, Courteille, Philippe W
Format: Article
Language:English
Subjects:
Bunching
Decay rate
Dipole interactions
Emitters
Mathematical analysis
Nanospheres
Photon emission
Photons
Spherical harmonics
Spontaneous emission
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Summary:The collective spontaneous emission of two point-dipole emitters near a plasmonic core-shell nanosphere is theoretically investigated. Based on the expansion of mode functions in vector spherical harmonics, we derive closed analytical expressions for both the cooperative decay rate and the dipole-dipole interaction strength associated with two point dipoles close to a sphere. Considering a plasmonic nanoshell containing a linearly amplifying medium inside the core, the second-order correlation function for the two emitters shows that it is possible to tune the photon emission, selecting either photon bunching or antibunching as a function of the polarization and position of the sphere. This result opens vistas to applications involving tunable single-photon sources in engineered artificial media.
ISSN:2331-8422
DOI:10.48550/arxiv.2001.10096