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Frontiers in Optics

Plasmon-empowered Single-photon Sources

Sergey I. Bozhevolnyi

Published Jan 1, 2017• 0 citations
Publisher

Abstract

Coupling of quantum emitters to localized and propagating surface plasmons is considered from the viewpoint of enhancing spontaneous emission rates, revealing advantages of plasmon-based configurations as compared to purely dielectric structures.
DOI
10.1364/ls.2017.lw2f.1

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The spectrum width can be narrowed to a certain degree by decreasing the coupling strength for the two-level emitter coupled to the propagating surface plasmon. But the width can not be narrowed any further because of the loss of the photon out of system by spontaneous emission from the emitter. Here we propose a new scheme to construct a narrow-band source via a one-dimensional waveguide coupling with a three-level emitter. It is shown that the reflective spectrum width can be narrowed avoiding the impact of the loss. This approach opens up the possibility of plasmonic ultranarrow single-photon source.