搜索结果: 1-15 共查到“理学 Exciton”相关记录31条 . 查询时间(0.069 秒)
Exciton transport in thin-film cyanine dye J-aggregates
Exciton transport thin-film cyanine dye J-aggregates
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2012/2/29
We present a theoretical model for the study of exciton dynamics in J-aggregated monolayers of fluorescent dyes. The excitonic evolution is described by a Monte-Carlo wave function approach which allo...
Exciton-polariton emission from organic semiconductor optical waveguides
Exciton-polariton emission organic semiconductor optical waveguides
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2011/8/17
Abstract: We photo-excite slab polymer waveguides doped with J-aggregating dye molecules and measure the leaky emission from strongly coupled waveguide exciton polariton modes at room temperature. We ...
Effects of s,p - d and s - p exchange interactions probed by exciton magnetospectroscopy in (Ga,Mn)N
exchange interactions exciton magnetospectroscopy
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2010/11/25
Near band-gap photoluminescence and reflectivity in magnetic field are employed to determine the exchange-induced splitting of free exciton states in paramagnetic wurtzite Ga1−xMnxN, x . 1%,grow...
Generic Mechanism of Optimal Energy Transfer Efficiency: A Scaling Theory of the Mean First-Passage Time in Exciton Systems
Energy Transfer Efficiency A Scaling Theory Mean First-Passage Time in Exciton Systems
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2014/9/24
An asymptotic scaling theory is presented using the conceptual basis of trapping-free subspace (i.e., orthogonal subspace) to establish the generic mechanism of optimal efficiency of excitation energy...
Possible realization of the Exciton Bose Liquid phase in a hard-core boson model with ring-only exchange interactions
Possible realization ring-only exchange interactions
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2010/11/17
We investigate a hard-core boson model with ring-only exchanges on a square lattice, where a K1
term acts on 1×1 plaquettes and a K2 term acts on 1×2 and 2×1 plaquettes, with a goal of realizing a no...
Coherence and Optical Emission from Bilayer Exciton Condensates
Coherence Optical Emission Bilayer Exciton Condensates
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2010/11/23
Experiments aimed at demonstrating Bose-Einstein condensation of excitons in two types of experiments with bilayer structures (coupled quantum wells) are reviewed,with an emphasis on the basic e ects....
Repulsively-bound exciton-biexciton states in high-spin fermions in optical lattices
Repulsively-bound exciton-biexciton states optical lattices
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2010/11/17
We show that the interplay between spin-changing collisions and quadratic Zeeman coupling
provides a novel mechanism for the formation of repulsively bound composites in high-spin fermions,which we i...
Exciton-phonon information flow in the energy transfer process of photosynthetic complexes
Exciton-phonon information flow energy transfer photosynthetic complexes
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2010/11/18
Non-Markovian and non-equilibrium phonon effects are believed to be key ingredients in the energy transfer in photosynthetic complexes, especially in complexes which exhibit a regime of intermediate ...
Exciton-Plasmon Interactions in Individual Carbon Nanotubes
Carbon nanotubes Near-field effects Excitons Plasmons
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2010/11/18
We use the macroscopic quantum electrodynamics approach suitable for absorbing and dispersing media to study the properties and role of collective surface excitations — excitons and plasmons — in sing...
Tunable exciton-phonon interactions in an optical lattice of polar molecules
Tunable exciton-phonon interactions optical lattice polar molecules
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2010/11/11
We show that an ensemble of polar molecules trapped in an optical lattice can be considered as a controllable open quantum system. The coupling between collective rotational excitations and the center...
Coherent optical writing and reading of the exciton spin state in single quantum dots
Coherent optical writing reading exciton spin state single quantum dots
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2010/10/21
We demonstrate a one to one correspondence between the polarization state of a light pulse tuned to excitonic resonances of single semiconductor quantum dots and the spin state of the exciton that it ...
Quantum dot Rabi rotations beyond the weak exciton-phonon coupling regime
Quantum dot Rabi rotations weak exciton-phonon coupling regime
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2010/10/21
We study the excitonic dynamics of a driven quantum dot under the influence of a phonon
environment, going beyond the weak exciton-phonon coupling approximation. By combining the
polaron transform a...
Optimization of Exciton Trapping in Energy Transfer Processes
Exciton Trapping Energy Transfer Processes
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2014/9/24
In this paper, we establish optimal conditions for maximal energy transfer efficiency using solutions for multilevel systems and interpret these analytical solutions with more intuitive kinetic networ...
Positively Charged Exciton in Double-Layer Quantum Dots
charged-exciton complexes quantum dots
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2007/8/15
2007Vol.48No.2pp.353-356DOI:
Positively Charged Exciton in Double-Layer Quantum Dots
HUANG Jin-Sheng1 and XIE Wen-Fang2
1 Jieyang Vocational and Technical College, Jiey...
Charged-Exciton Complexes in Quantum Dots
few-body system charged-exciton complex quantum dot
hyperspherical coordinate
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2007/8/15
2001Vol.36No.1pp.95-100DOI:
Charged-Exciton Complexes in Quantum Dots
XIE Wen-Fang
Department of Physics, Guangzhou University, Guangzhou 510405, China
(Receiv...