Controlling Photoluminescence for optoelectronic applications via precision fabrication of quantum Dot/Au nanoparticle hybrid assemblies

A Nisar, H Hapuarachchi, L Lermusiaux… - ACS Applied Nano …, 2022 - ACS Publications
The distance-dependent interaction of an emitter with a plasmonic nanoparticle or surface
forms the basis for the application of such systems within optoelectronics. Semiconductor …

Stochastic model of noise for a quantum thermal transistor

UN Ekanayake, SD Gunapala, M Premaratne - Physical Review B, 2023 - APS
Our focus in this investigation lies in developing a noise model for a quantum thermal
transistor model inspired by its electronic counterpart, with the primary aim of establishing a …

Floquet engineering of dressed surface plasmon polariton modes in plasmonic waveguides

K Herath, M Premaratne - Physical Review B, 2022 - APS
We present a comprehensive study surface plasmon polariton (SPP) propagation on planar
metallic waveguides under a dressing field. We perform a set of analytical calculations of the …

NV-plasmonics: modifying optical emission of an NV center via plasmonic metal nanoparticles

H Hapuarachchi, F Campaioli, JH Cole - Nanophotonics, 2022 - degruyter.com
The nitrogen-vacancy (NV) center in diamond is very sensitive to magnetic and electric
fields, strain, and temperature. In addition, it is possible to optically interrogate individual …

Generalized model for the charge transport properties of dressed quantum hall systems

K Herath, M Premaratne - Physical Review B, 2022 - APS
We present a generalized mathematical model for predicting the transport properties of a
quantum system exposed to a stationary magnetic field and a high-intensity electromagnetic …

Complete characterization of the spasing (ll) curve of a three-level quantum coherence enhanced spaser for design optimization

L Kumarapperuma, M Premaratne, PK Jha… - Applied Physics …, 2018 - pubs.aip.org
We demonstrate that it is possible to derive an approximate analytical expression to
characterize the spasing (LL) curve of a coherently enhanced spaser with 3-level gain …

Superradiant cancer hyperthermia using a buckyball assembly of quantum dot emitters

S Mallawaarachchi, M Premaratne… - IEEE Journal of …, 2018 - ieeexplore.ieee.org
With the emergence of nanomedicine, targeted hyperthermia has a high potential of
becoming a first-line cancer treatment modality. However, hyperthermia needs to be …

Exciton behavior under the influence of metal nanoparticle near fields: Significance of nonlocal effects

H Hapuarachchi, SD Gunapala, Q Bao, MI Stockman… - Physical Review B, 2018 - APS
We analytically characterize the influence of a neighboring metal nanoparticle (MNP) on the
behavioral trends of a quantum dot (QD) using a generalized nonlocal optical response …

Significance of the nonlocal optical response of metal nanoparticles in describing the operation of plasmonic lasers

D Lelwala Gamacharige, SD Gunapala, MI Stockman… - Physical Review B, 2019 - APS
A metal nanoparticle (MNP) coupled to a quantum emitter (QE) is a versatile composite
nanostructure with unique chemical and physical properties which has been studied …

Emission enhancement in nanoassemblies with extremely small metal nanoparticles: Nonmonotonic effect of temperature and the non-Markovian interactions

R Dutta, K Jain, K Sharma, M Venkatapathi… - Physical Review …, 2023 - APS
Compact light-emitting quantum dot monolayers find wide-ranging applications in
photovoltaics to display technology. A key aspect of display technology is the light extraction …