Results 91 to 100 of about 12,791 (220)
, 2014 We analyze a 1-d ring structure composed of many two-level systems, in the limit where only one excitation is present. The two-level systems are coupled to a common environment, where the excitation can be lost, which induces super and subradiant ...
Borgonovi, F. +2 more
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Photo‐Excitations in Halide Perovskites: Where Do Simulations and Experiments Meet?
Laser &Photonics Reviews, EarlyView.Aiming to bridge the gap between simulations and measurements of light–matter couplings and photo‐excitations in new functional materials, this perspective highlights insights and bottlenecks of state‐of‐the‐art experimental and theoretical methods (2D electronic spectroscopy vs.
Muhammad Sufyan Ramzan +5 more
wiley +1 more source
Physics Letters BWe obtain the accretion, evaporation and superradiance phase diagram of astrophysical and primordial black holes in the mass range 10−33−1011M⊙. This black hole mass range corresponds to production of 10−21−1021 eV particles for superradiance (bosons ...
Caner Ünal
doaj +1 more source
Superradiance in spin-$J$ particles: Effects of multiple levels
, 2011 We study the superradiance dynamics in a dense system of atoms each of which can be generally a spin-$j$ particle with $j$ an arbitrary half-integer. We generalize Dicke's superradiance point of view to multiple-level systems, and compare the results ...
Lin, G. -D., Yelin, S. F.
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Long‐Range Exciton Energy Transfer in Two‐Dimensional Materials
Laser &Photonics Reviews, EarlyView.This review highlights recent advances in long‐range exciton energy transfer within planar 2D‐material architectures. It emphasizes the emergence of self‐hybridized excitonpolaritons, exciton coupling to surface plasmon polaritons and plasmonic lattices, and the role of dipoledipole transfer pathways in enabling efficient nanoscale energy transport ...
Paul H. Bittorf +8 more
wiley +1 more source
Periodic superradiance in an Er:YSO crystal
Physical Review ResearchWe observed periodic optical pulses from an Er:YSO crystal during irradiating with a continuous-wave excitation laser. We refer to this phenomenon as “periodic superradiance.” This periodicity can be understood qualitatively by a simple model, in which a
Hideaki Hara +7 more
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Non-Markovian super-superradiance in a linear chain of up to 100 qubits
Physical Review Research, 2019 We study non-Markovian enhancement effects in the spontaneous emission of a collective excitation in a linear chain of up to 100 qubits coupled to a one-dimensional waveguide.
Fatih Dinc, Agata M. Brańczyk
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On Accounting for Own Fields of Emitters when Describing Generation Modes
East European Journal of Physics, 2023 The paper discusses three different modes of electromagnetic field generation by an ensemble of oscillators placed at the radiation wavelength in the one-dimensional case.
Volodymyr M. Kuklin, Eugen V. Poklonskiy
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Bandgap Engineering On Demand in GaAsN Nanowires by Post‐Growth Hydrogen Implantation
Small, Volume 22, Issue 7, 2 February 2026.The GaAsN bandgap in the GaAs/GaAsN core–shell nanowire shifts to lower energy for increasing N concentrations. By post‐growth H implantation the GaAsN bandgap is moved to a higher GaAs‐like energy through the formation of N–H complexes. By thermal annealing, these complexes can be partially dissolved, allowing to tune the GaAsN bandgap over a range of
Nadine Denis +11 more
wiley +1 more source
Observation of a red-blue detuning asymmetry in matter-wave superradiance
, 2010 We report the first experimental observations of strong suppression of matter-wave superradiance using blue-detuned pump light and demonstrate a pump-laser detuning asymmetry in the collective atomic recoil motion. In contrast to all previous theoretical
Cao, Qiang +10 more
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