Efficient excitation of dye molecules for single photon generation

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Schofield+et+al_2018_J._Phys._Commun._10.1088_2399-6528_aaf09a.pdfAccepted version7.14 MBAdobe PDFView/Open
Title: Efficient excitation of dye molecules for single photon generation
Authors: Boissier, S
Schofield, R
Major, K
Grandi, S
Boissier, S
Hinds, E
Clark, A
Item Type: Journal Article
Abstract: A reliable photon source is required for many aspects of quantum technology. Organic molecules are attractive for this application because they can have high quantum yield and can be photostable, even at room temperature. To generate a photon with high probability, a laser must excite the molecule efficiently. We develop a simple model for that efficiency and discuss how to optimise it. We demonstrate the validity of our model through experiments on a single dibenzoterrylene (DBT) molecule in an anthracene crystal. We show that the excitation probability cannot exceed 75% at room temperature, but can increase to over 99% if the sample is cooled to liquid nitrogen temperature. The possibility of high photon generation efficiency with only modest cooling is a significant step towards a reliable photon source that is simple and practical.
Issue Date: 13-Nov-2018
Date of Acceptance: 13-Nov-2018
ISSN: 2399-6528
Publisher: IOP Publishing
Journal / Book Title: Journal of Physics Communications
Copyright Statement: © 2018 The Author(s). As the Version of Record of this article is going to be/has been published on a gold open access basis under a CC BY 3.0 licence, this Accepted Manuscript is available for reuse under a CC BY 3.0 licence immediately.
Sponsor/Funder: The Royal Society
Commission of the European Communities
Engineering & Physical Science Research Council (E
Engineering & Physical Science Research Council (EPSRC)
The Royal Society
Engineering & Physical Science Research Council (EPSRC)
Funder's Grant Number: RP061057
Keywords: quant-ph
Publication Status: Published online
Online Publication Date: 2018-11-13
Appears in Collections:Quantum Optics and Laser Science
Faculty of Natural Sciences

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