Results 101 to 110 of about 3,793 (206)

Superradiance in Organic Dyes [PDF]

open access: yes
The characteristics of the superradiance in organic dyes pumped by a N_2 laser have been studied. It is confirmed that the experimental results satisfy the theoretical characteristics of the superradiance in a two level system, though the dyes employed ...
ムトウ, シンゾウ   +8 more
core   +1 more source

Quantum-enhanced photoprotection in neuroprotein architectures emerges from collective light-matter interactions

open access: yesFrontiers in Physics
BackgroundSuperradiance is the phenomenon of many identical quantum systems absorbing and/or emitting photons collectively at a higher rate than any one system can individually.
Hamza Patwa   +2 more
doaj   +1 more source

Experimental Fock-State Superradiance

open access: yes, 2017
Superradiance in an ensemble of atoms leads to the collective enhancement of radiation in a particular mode shared by the atoms in their spontaneous decay from an excited state.
D. F. Barros (17494800)   +8 more
core   +1 more source

Infrared photons generated by voltage-gated sodium channel dynamics: a hypothesis for cooperative electrodynamic interactions at the axon initial segment

open access: yesFrontiers in Human Neuroscience
Voltage-gated sodium (NaV) channels are essential for neuronal excitability and action-potential generation, yet the electrodynamic consequences of voltage-sensor motion remain largely unexplored.
Daya Shankar Gupta
doaj   +1 more source

THz Superradiance from a GaAs: ErAs Quantum Dot Array at Room Temperature

open access: yesApplied Sciences, 2019
We report that an ErAs quantum-dot array in a GaAs matrix under 1550 nm pulsed excitation produces cooperative spontaneous emission—Dicke superradiance—in the terahertz frequency region at room temperature.
Weidong Zhang   +5 more
doaj   +1 more source

Cooperative Decay of N Atoms in a Ring Configuration

open access: yesAtoms
We provide an analytic expression of the spectrum of the cooperative decay rate of N two-level atoms regularly distributed on a ring in the single-excitation configuration.
Nicola Piovella
doaj   +1 more source

Hairless black hole by superradiance

open access: yesJournal of High Energy Physics
We investigate the interplaying effects of black hole scalarization and superradiance in the context of the Einstein-Maxwell-scalar model, with the scalar field possessing electric charge.
Sebastian Garcia-Saenz   +3 more
doaj   +1 more source

Observation of Blackbody Radiation Enhanced Superradiance in ultracold Rydberg Gases

open access: yes, 2020
An ensemble of excited atoms can synchronize emission of light collectively in a process known as superradiance when its characteristic size is smaller than the wavelength of emitted photons.
Zhengyang Bai (6240836)   +8 more
core   +1 more source

Super- and subradiance of clock atoms in multimode optical waveguides

open access: yesNew Journal of Physics, 2019
The transversely confined propagating modes of an optical fiber mediate virtually infinite range energy exchanges among atoms placed within their field, which adds to the inherent free space dipole–dipole coupling.
Laurin Ostermann   +3 more
doaj   +1 more source

Superradiance paradox in waveguide lattices

open access: yes, 2020
Recently, it has been suggested that the collective radiative decay of two point-like quantum emitters coupled to a waveguide, separated by a distance comparable to the coherence length of a spontaneously emitted photon, leads to an apparent ...
Longhi S., Longhi, Stefano
core   +1 more source

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