ORCID Profile
0000-0002-3268-6946
Current Organisations
Federal University of Paraíba
,
Imperial College London
,
Universidade Estadual Paulista Júlio de Mesquita Filho
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Publisher: IOP Publishing
Date: 27-11-2018
Publisher: Wiley
Date: 12-01-2022
Abstract: Single organic molecules are promising photon sources for quantum technologies. In this work we show photon emission from dibenzoterrylene, a widely used organic emitter, in a new host matrix, para ‐terphenyl. We present a reprecipitation growth method that produces para ‐terphenyl nanocrystals which are ideal for integration into nanophotonic devices due to their small size. We characterise the optical properties of dibenzoterrylene in nanocrystals at room and cryogenic temperatures, showing bright, narrow emission from a single molecule. Spectral data on the vibrational energies is presented and a further 25 additional molecules are characterised. This emitter‐host combination has potential for quantum technology purposes with wavelengths suitable for interfacing with quantum memories.
Publisher: AIP Publishing
Date: 08-2019
DOI: 10.1063/1.5110275
Abstract: We demonstrate the emission of photons from a single molecule into a hybrid gap plasmon waveguide. Crystals of anthracene, doped with dibenzoterrylene (DBT), are grown on top of the waveguides. We investigate a single DBT molecule coupled to the plasmonic region of one of the guides and determine its in-plane orientation, excited state lifetime, and saturation intensity. The molecule emits light into the guide, which is remotely out-coupled by a grating. The second-order autocorrelation and cross-correlation functions show that the emitter is a single molecule and that the light emerging from the grating comes from that molecule. The coupling efficiency is found to be βWG = 11.6(1.5)%. This type of structure is promising for building new functionality into quantum-photonic circuits, where localized regions of strong emitter-guide coupling can be interconnected by low-loss dielectric guides.
Publisher: American Physical Society (APS)
Date: 19-12-2016
Publisher: AIP Publishing
Date: 08-2015
DOI: 10.1063/1.4928500
Abstract: Dibenzoterrylene (DBT) molecules within a crystalline anthracene matrix show promise as quantum emitters for controlled, single photon production. We present the design and construction of a chamber in which we reproducibly grow doped anthracene crystals of optical quality that are several mm across and a few μm thick. We demonstrate control of the DBT concentration over the range 6–300 parts per trillion and show that these DBT molecules are stable single-photon emitters. We interpret our data with a simple model that provides some information on the vapour pressure of DBT.
Publisher: Springer Science and Business Media LLC
Date: 13-10-2017
Publisher: Royal Society of Chemistry (RSC)
Date: 2023
DOI: 10.1039/D2NR02439J
Abstract: We investigate repeatable and reliable tuning of single organic molecule fluorescence by applying strain via a piezoelectric substrate.
Publisher: American Physical Society (APS)
Date: 15-04-2020
Publisher: American Physical Society (APS)
Date: 18-01-2022
Publisher: American Physical Society (APS)
Date: 23-10-2020
Publisher: The Optical Society
Date: 04-03-2016
DOI: 10.1364/OE.24.005615
Publisher: Optica Publishing Group
Date: 12-06-2020
DOI: 10.1364/OME.396942
Abstract: We demonstrate an emulsion-polymerisation technique to embed dibenzoterrylene-doped anthracene nanocrystals in polymethyl methacrylate (PMMA) nanocapsules. The nanocapsules require no further protection after fabrication and are resistant to sublimation compared to unprotected anthracene. The room temperature emission from single dibenzoterrylene molecules is stable and when cooled to cryogenic temperatures we see no change in their excellent optical properties compared to existing growth methods. We also show emission from nanocapsules embedded in a thin layer of titanium dioxide, highlighting their potential for integration into hybrid nanophotonic devices.
Publisher: Springer Science and Business Media LLC
Date: 29-01-2021
DOI: 10.1038/S41467-021-20915-Z
Abstract: Extinction spectroscopy is a powerful tool for demonstrating the coupling of a single quantum emitter to a photonic structure. However, it can be challenging in all but the simplest of geometries to deduce an accurate value of the coupling efficiency from the measured spectrum. Here we develop a theoretical framework to deduce the coupling efficiency from the measured transmission and reflection spectra without precise knowledge of the photonic environment. We then consider the case of a waveguide interrupted by a transverse cut in which an emitter is placed. We apply that theory to a silicon nitride waveguide interrupted by a gap filled with anthracene that is doped with dibenzoterrylene molecules. We describe the fabrication of these devices, and experimentally characterise the waveguide coupling of a single molecule in the gap.
Location: United Kingdom of Great Britain and Northern Ireland
Location: Brazil
No related grants have been discovered for Kyle Major.