155 citations · 603 across the 19 of their papers we have counts for
19 papers
Ultranarrow linewidth room-temperature single-photon source from perovskite quantum dot embedded in optical microcavity
Amit R. Dhawan, Tristan Farrow, Ashley Marshall +5
Ultranarrow bandwidth single-photon sources operating at room-temperature are of vital importance for viable optical quantum technologies at scale, including quantum key distributi…
Design of free-space couplers for suspended triangular nano-beam waveguides
J. P. Hadden, Cobi Maynard, Daryl M. Beggs +2
Photonic waveguides with triangular cross section are being investigated for material systems such as diamond, glasses and gallium nitride, which lack easy options to create conven…
Three-photon excitation of quantum two-level systems
Viviana Villafañe, Bianca Scaparra, Manuel Rieger +8
We demonstrate that semiconductor quantum dots can be excited efficiently in a resonant three-photon process, whilst resonant two-photon excitation is highly suppressed. Time-depen…
Resonantly pumped bright-triplet exciton lasing in caesium lead bromide perovskites
Guanhua Ying, Tristan Farrow, Atanu Jana +9
The surprising recent observation of highly emissive triplet-states in lead halide perovskites accounts for their orders-of-magnitude brighter optical signals and high quantum effi…
Imaging non-radiative point defects buried in quantum wells using cathodoluminescence
Thomas Weatherley, Wei Liu, Vitaly Osokin +5
Crystallographic point defects (PDs) can dramatically decrease the efficiency of optoelectronic semiconductor devices, many of which are based on quantum well (QW) heterostructures…
Reduction of radiative lifetime and slow-timescale spectral diffusion in InGaN polarized single-photon sources
Tong Wang, Tongtong Zhu, Tim J. Puchtler +6
Non-polar (11-20) a-plane quantum dots (QDs) are strong candidates for both > 200 K on-chip ultrafast polarized single-photon generation and the investigation of high temperature s…
Polaritons in Living Systems: Modifying Energy Landscapes in Photosynthetic Organisms Using a Photonic Structure
David M Coles, Lucas C Flatten, Thomas Sydney +8
Photosynthetic organisms rely on a series of self-assembled nanostructures with tuned electronic energy levels in order to transport energy from where it is collected by photon abs…
An ultrafast polarised single photon source at 220 K
Tong Wang, Tim J. Puchtler, Tongtong Zhu +4
A crucial requirement for the realisation of efficient and scalable on-chip quantum communication is an ultrafast polarised single photon source operating beyond the Peltier coolin…
Ultrafast, polarized, single-photon emission from m-plane InGaN Quantum Dots on GaN nanowires
Tim J. Puchtler, Tong Wang, Christopher X. Ren +4
We demonstrate single photon emission from self-assembled m-plane InGaN quantum dots (QDs) embedded on the side-walls of GaN nanowires. A combination of electron microscopy, cathod…
Experimental and theoretical analyses of strongly polarized photon emission from non-polar InGaN quantum dots
Tong Wang, Tim J. Puchtler, Saroj Kanta Patra +7
We present a comprehensive investigation of the polarization properties of non-polar a-plane InGaN quantum dots (QDs) and their origin with statistically significant experimental d…
Fabrication of Ultrathin Single-Crystal Diamond Membranes
B. A. Fairchild, P. Olivero, S. Rubanov +9
We demonstrate the fabrication of sub-micron layers of single-crystal diamond suitable for subsequent processing as demonstrated by this test ring structure. This method is a signi…
Strong exciton-photon coupling with colloidal nanoplatelets in an open microcavity
Lucas C. Flatten, Sotirios Christodoulou, Robin K. Patel +6
Colloidal semiconductor nanoplatelets exhibit quantum size effects due to their thickness of only few monolayers, together with strong optical band-edge transitions facilitated by…
Electrically tunable organic-inorganic hybrid polaritons with monolayer WS2
Lucas C. Flatten, David M. Coles, Zhengyu He +4
Exciton-polaritons are quasiparticles consisting of a linear superposition of photonic and excitonic states, offering potential for nonlinear optical devices. The excitonic compone…
Organic molecule fluorescence as an experimental test-bed for quantum jumps in thermodynamics
Cormac Browne, Tristan Farrow, Oscar C. O. Dahlsten +1
We demonstrate with an experiment how molecules are a natural test-bed for probing fundamental quantum thermodynamics. Single-molecule spectroscopy has undergone transformative cha…
Excited exciton and biexciton localised states in a single quantum ring
H. D. Kim, K. Kyhm, R. A. Taylor +6
We observe excited exciton and biexciton states of localised excitons in an anisotropic quantum ring, where large polarisation asymmetry supports the presence of a crescent-like lo…
Non-polar (11-20) InGaN quantum dots with short exciton lifetimes grown by metal-organic vapor phase epitaxy
Tongtong Zhu, Fabrice Oehler, Benjamin P. L. Reid +4
We report on the optical characterization of non-polar a-plane InGaN quantum dots (QDs) grown by metal-organic vapor phase epitaxy using a short nitrogen anneal treatment at the gr…
Asymmetry of localised states in a single quantum ring: polarization dependence of excitons and biexcitons
H. D. Kim, K. Kyhm, R. A. Taylor +4
We performed spectroscopic studies of a single GaAs quantum ring with an anisotropy in the rim height. The presence of an asymmetric localised state was suggested by the adiabatic…
Strongly coupled single quantum dot in a photonic crystal waveguide cavity
F. S. F. Brossard, X. L. Xu, D. A. Williams +4
Cavities embedded in photonic crystal waveguides offer a promising route towards large scale integration of coupled resonators for quantum electrodynamics applications. In this let…
Direct optical excitation of a fullerene-incarcerated metal ion
Mark A G Jones, Kyriakos Porfyrakis, G Andrew D Briggs +2
The endohedral fullerene Er3N@C80 shows characteristic 1.5 micron photoluminescence at cryogenic temperatures associated with radiative relaxation from the crystal-field split Er3+…