Results 11 to 20 of about 292,233 (298)

Quantum Interference in Spontaneous Decay of a Quantum Emitter Placed in a Dimer of Bismuth-Chalcogenide Microparticles

open access: yesPhotonics, 2022
We investigate the phenomenon of quantum interference in spontaneous emission for a three-level V-type quantum emitter placed between two bismuth-chalcogenide (Bi2Te3, Bi2Se3) microspheres.
Nikolaos Kyvelos   +3 more
doaj   +1 more source

Modeling of spontaneous emission in presence of cylindrical nanoobjects: the scattering matrix approach

open access: yesКомпьютерная оптика, 2023
We propose a method of analysis of spontaneous emission of a quantum emitter (an atom, a luminescence center, a quantum dot) inside or in vicinity of a cylinder.
V.V. Nikolaev   +2 more
doaj   +1 more source

Anisotropic Purcell Effect and Quantum Interference in Fractal Aggregates of Nanoparticles

open access: yesPhotonics, 2023
We study theoretically the emergence of an anisotropic Purcell factor in random two-dimensional fractal aggregates of nanoparticles. These nanoparticles can either be metallic nanoparticles made of silver, which exhibit surface plasmon resonances, or ...
Vassilios Yannopapas   +1 more
doaj   +1 more source

Effect of Spontaneous Emission in Hollow Waveguide on Gas Absorbance Measurement by Absorption Spectroscopy

open access: yesIEEE Photonics Journal, 2022
Hollow waveguide (HWG) as an absorption cell for gas spectral sensing has the advantages of low transmission loss, fast response speed, and high path length to volume ratio.
Liming Yuan   +5 more
doaj   +1 more source

Generalized Weisskopf‐Wigner model of triboelectroluminescence

open access: yesEcoMat, 2021
The phenomenon of triboelectroluminescence is studied using a generalization of the Weisskopf‐Wigner model of spontaneous emission in an electronic two‐level system. An irreversible and exponential transfer of charge results from the model.
Lok C. Lew Yan Voon   +3 more
doaj   +1 more source

Quantum electrodynamics in anisotropic and tilted Dirac photonic lattices

open access: yesNew Journal of Physics, 2021
One of the most striking predictions of quantum electrodynamics is that vacuum fluctuations of the electromagnetic field can lead to spontaneous emission of atoms as well as photon-mediated interactions among them.
Jaime Redondo-Yuste   +3 more
doaj   +1 more source

Infrared Light Emission Devices Based on Two-Dimensional Materials

open access: yesNanomaterials, 2022
Two-dimensional (2D) materials have garnered considerable attention due to their advantageous properties, including tunable bandgap, prominent carrier mobility, tunable response and absorption spectral band, and so forth.
Wenyi Li   +12 more
doaj   +1 more source

Two-Level Systems with Broken Inversion Symmetry

open access: yesProceedings, 2019
This research analyzes the impact of the asymmetry of the quantum system and the range of control possibilities offered by dispersive media and the nanostructures. I investigated the asymmetric behavior of a two level system in the Jaynes-Cummings model (
Giovanni Scala
doaj   +1 more source

Bound Modes in Dielectric Microcavities [PDF]

open access: yes, 2002
We demonstrate how exactly bound cavity modes can be realized in dielectric structures other than 3d photonic crystals. For a microcavity consisting of crossed anisotropic layers, we derive the cavity resonance frequencies, and spontaneous emission rates.
Allaart, K., Lenstra, D., Visser, P. M.
core   +7 more sources

Chiral SQUID-metamaterial waveguide for circuit-QED

open access: yesNew Journal of Physics, 2022
Superconducting metamaterials, which are designed and fabricated with structured fundamental circuit elements, have motivated recent developments of exploring unconventional quantum phenomena in circuit quantum electrodynamics (circuit-QEDs).
Xin Wang   +4 more
doaj   +1 more source

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