Results 71 to 80 of about 5,045,379 (328)

Dynamical Casimir Effect in cavity with N-level detector or N-1 two-level atoms [PDF]

open access: yes, 2012
We study the photon generation from vacuum via the Dynamical Casimir Effect in a cavity containing a N-level detector in equally-spaced resonant ladder configuration or N-1 identical resonant two-level atoms.
A. Dodonov, V. Dodonov
semanticscholar   +1 more source

A modern review of the two-level approximation

open access: yes, 2003
The paradigm of the two-level atom is revisited and its perturbative analysis is discussed in view of the principle of duality in perturbation theory. The models we consider are a two-level atom and an ensemble of two-level atoms both interacting with a ...
Allen   +46 more
core   +1 more source

The (Glg)ABCs of cyanobacteria: modelling of glycogen synthesis and functional divergence of glycogen synthases in Synechocystis sp. PCC 6803

open access: yesFEBS Letters, EarlyView.
We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee   +3 more
wiley   +1 more source

Entanglement induced by two-mode thermal noise taking into account the dipole-dipole interaction and atomic coherence

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2013
The entanglement of two two-level atoms with the nondegenerate two-photon transitions interacting with two-mode thermal field in lossless cavity has been considered.
Eugene K Bashkirov   +1 more
doaj   +3 more sources

Scattering of a single plasmon polariton by multiple atoms for in-plane control of light

open access: yesNanophotonics, 2020
We study the interaction of a single photon in a surface plasmon polariton mode with multiple atoms. We propose a system of two atoms to achieve a tunable scattering from subscattering to superscattering regimes by changing the angle of the incident ...
Rituraj, Orenstein Meir, Fan Shanhui
doaj   +1 more source

Evaluation of the Aromaticity of a Non-Planar Carbon Nano-Structure by Nucleus-Independent Chemical Shift Criterion: Aromaticity of the Nitrogen- Doped Corannulene [PDF]

open access: yesJournal of Nanostructures, 2014
Substitution of two or four carbon atoms by nitrogen in the corannulene molecule as a carbon nanostructure was done and the obtained structures were optimized at MP2/6-31G(d) level of theory.
A. Reisi-Vanani, L. Alihoseini
doaj   +1 more source

Structural biology of ferritin nanocages

open access: yesFEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source

Two-Photon Collective Atomic Recoil Lasing

open access: yesAtoms, 2015
We present a theoretical study of the interaction between light and a cold gasof three-level, ladder configuration atoms close to two-photon resonance. In particular, weinvestigate the existence of collective atomic recoil lasing (CARL) instabilities in ...
James A. McKelvie, Gordon R.M. Robb
doaj   +1 more source

Quantum optics with Rydberg superatoms

open access: yesJournal of Physics Communications, 2023
Quantum optics based on highly excited atoms, also known as Rydberg atoms, has cemented itself as a powerful platform for the manipulation of light at the few-photon level.
Jan Kumlin   +5 more
doaj   +1 more source

Quantum statistical characteristics of the interaction between two two-level atoms and radiation field

open access: yes, 2015
.A quantum optics model is considered where the cavity field interacts with two coupled atoms. The time-dependent wave function is obtained and used to derive the density matrix from which we discussed some statistical properties for the present system ...
M. Abdalla   +5 more
semanticscholar   +1 more source

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