41 citations · 191 across the 17 of their papers we have counts for
14 papers · 1 filter
Manipulating Interlayer Excitons for Ultra-pure Near-infrared Quantum Light Generation
Huan Zhao, Linghan Zhu, Xiangzhi Li +6
Interlayer excitons (IXs) formed at the interface of atomically-thin semiconductors possess various novel properties. In a parallel development, nanoscale strain engineering has em…
Proximity Induced Chiral Quantum Light Generation in Strain-Engineered WSe2/NiPS3 Heterostructures
Xiangzhi Li, Andrew C. Jones, Junho Choi +7
Quantum light emitters (QEs) capable of generating single photons of well-defined circular polarization could enable non-reciprocal single photon devices and deterministic spin-pho…
Non-equilibrium states of a plasmonic Dicke model with coherent and dissipative surface plasmon-quantum emitter interactions
Andrei Piryatinski, Oleksiy Roslyak, Hao Li +1
Hybrid photonic-plasmonic nanostructures allow one to engineer coupling of quantum emitters and cavity modes accounting for the direct coherent and environment mediated dissipative…
Cooperative Light Emission in the Presence of Strong Inhomogeneous Broadening
C. Sun, V. Y. Chernyak, A. Piryatinski +1
We study photon emission by an ensemble of two-level systems, with strong inhomogeneous broadening and coupled to a cavity mode whose frequency has linear time-dependence. The anal…
Theory of electron transport and emission from a semiconductor nanotip
Andrei Piryatinski, Chengkun Huang, Thomas J. T. Kwan
An effective mass based model accounting for the conduction band quantization in a high aspect ratio semiconductor nanotip is developed to describe injected electron transport and…
Effect of periodic potential on exciton states in semiconductor carbon nanotubes
Oleksiy Roslyak, Andrei Piryatinski
We develop a theoretical background to treat exciton states of semiconductor single-walled carbon nanotubes (SWCNTs) in presence of a periodic potential induced by the surface acou…
Quantum symmetry breaking of exciton/polaritons in metal-nanorod plasmonic array
Svitlana Zaster, Eric R. Bittner, Andrei Piryatinski
We study the collective, superradiant behavior in the system of emitter-dressed Ag nanorods. Starting from the Drude model for the plasmon oscillations, we arrive at a semi-empiric…
Influences of Exciton Diffusion and Exciton-Exciton Annihilation on Photon Emission Statistics of Carbon Nanotubes
Xuedan Ma, Oleskiy Roslyak, Juan G. Duque +5
Pump-dependent photoluminescence imaging and 2nd order photon correlation studies have been performed on individual single-walled carbon nanotubes (SWCNTs) at room temperature that…
Thermoelectric properties of semiconductor nanowire networks
Oleksiy Roslyak, Andrei Piryatinski
To examine thermoelectric (TE) properties of a semiconductor nanowire (NW) network, we propose a theoretical approach mapping the TE network on a two-port network. In contrast to a…
Low-Temperature Hopping Dynamics with Energy Disorder: Renormalization Group Approach
Kirill A. Velizhanin, Andrei Piryatinski, Vladimir Y. Chernyak
We formulate a real-space renormalization group (RG) approach for efficient numerical analysis of the low-temperature hopping dynamics in energy-disordered lattices. The approach e…
Numerical analysis of carrier multiplication mechanisms in nanocrystal and bulk forms of PbSe and PbS
Kirill A. Velizhanin, Andrei Piryatinski
We report on systematic numerical study of carrier multiplication (CM) processes in spherically symmetric nanocrystal (NC) and bulk forms of PbSe and PbS representing the test bed…
Numerical Study of Carrier Multiplication Pathways in Nanocrystalline and Bulk Form of PbSe
Kirill A. Velizhanin, Andrei Piryatinski
Employing the interband exciton scattering model, we have performed a numerical study of the direct photogeneration and population relaxation processes contributing to carrier mult…
Probing Interband Coulomb Interactions in Semiconductor Nanocrystals with 2D Double-Quantum Coherence Spectroscopy
Kirill A. Velizhanin, Andrei Piryatinski
Using previously developed exciton scattering model accounting for the interband, i.e., exciton-biexciton, Coulomb interactions in semiconductor nanocrystals (NCs), we derive a clo…
Exciton scattering model of carrier multiplication in semiconductor nanocrystals
Andrei Piryatinski, Kirill A. Velizhanin
The effect of carrier multiplication (CM) in semiconductor nanocrystals is systematically treated by employing an exciton scattering approach. Using projection operators, we reduce…