Exciton Dynamics and Time-Resolved Fluorescence in Nanocavity-Integrated
Monolayers of Transition-Metal Dichalcogenides
- URL: http://arxiv.org/abs/2303.15470v1
- Date: Sat, 25 Mar 2023 10:13:43 GMT
- Title: Exciton Dynamics and Time-Resolved Fluorescence in Nanocavity-Integrated
Monolayers of Transition-Metal Dichalcogenides
- Authors: Kewei Sun, Kaijun Shen, Maxim F. Gelin and Yang Zhao
- Abstract summary: We have developed an ab-initio-based numerically-accurate methodology for the simulation of the exciton dynamics and time- and frequency-resolved fluorescence spectra of the cavity-controlled materials at finite temperature.
This allowed us to establish dynamical and spectroscopic signatures of the polaronic and polaritonic effects as well as uncover their characteristic timescales in the relevant range of temperatures.
- Score: 9.960057330841405
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: We have developed an ab-initio-based fully-quantum numerically-accurate
methodology for the simulation of the exciton dynamics and time- and
frequency-resolved fluorescence spectra of the cavity-controlled
two-dimensional materials at finite temperature and applied this methodology to
the single-layer WSe2 system. This allowed us to establish dynamical and
spectroscopic signatures of the polaronic and polaritonic effects as well as
uncover their characteristic timescales in the relevant range of temperatures.
Related papers
- Near-field dynamical Casimir effect [0.2302001830524133]
We propose the dynamical Casimir effect in a time-modulated near-field system.
We have identified flux contributions from both quantum and thermal fluctuations at finite temperatures.
Our findings open an avenue for the exploration of dynamical Casimir effect beyond cryogenic temperatures.
arXiv Detail & Related papers (2024-10-28T18:14:10Z) - Limits for coherent optical control of quantum emitters in layered
materials [49.596352607801784]
coherent control of a two-level system is among the most essential challenges in modern quantum optics.
We use a mechanically isolated quantum emitter in hexagonal boron nitride to explore the individual mechanisms which affect the coherence of an optical transition under resonant drive.
New insights on the underlying physical decoherence mechanisms reveals a limit in temperature until which coherent driving of the system is possible.
arXiv Detail & Related papers (2023-12-18T10:37:06Z) - Attosecond electron microscopy by free-electron homodyne detection [0.0]
Time-resolved electron microscopy aims at tracking nanoscale excitations and dynamic states of matter with a temporal resolution ultimately reaching the attosecond regime.
Here, we introduce Free-Electro-n Homodyne Detection (FREHD) as a universally applicable approach to electron microscopy phase-resolved optical responses at hightemporal resolution.
arXiv Detail & Related papers (2023-05-04T17:23:37Z) - Dynamics of molecular rotors in bulk superfluid helium [68.8204255655161]
We report on the experimental study of the laser-induced rotation of helium dimers inside the superfluid $4mathrmHe$ bath at variable temperature.
The observed temperature dependence suggests a non-equilibrium evolution of the quantum bath, accompanied by the emission of the wave of second sound.
arXiv Detail & Related papers (2023-04-08T01:22:19Z) - Plasmonics enabled atomically thin linearly polarized emitter at room
temperature [0.0]
tuning of excitonic emission from monolayer WSe2 mechanically exfoliated on top of a periodic two dimensional plasmonic array of elliptical gold (Au) nanodiscs.
The results demonstrate active tunability of optical emission from WSe2 by using an otherwise passive plasmonic environment and open the possibility of achieving atomically thin linearly polarized emitters at room temperature.
arXiv Detail & Related papers (2022-05-25T17:38:58Z) - Photoinduced prethermal order parameter dynamics in the two-dimensional
large-$N$ Hubbard-Heisenberg model [77.34726150561087]
We study the microscopic dynamics of competing ordered phases in a two-dimensional correlated electron model.
We simulate the light-induced transition between two competing phases.
arXiv Detail & Related papers (2022-05-13T13:13:31Z) - Clean two-dimensional Floquet time-crystal [68.8204255655161]
We consider the two-dimensional quantum Ising model, in absence of disorder, subject to periodic imperfect global spin flips.
We show by a combination of exact diagonalization and tensor-network methods that the system can sustain a spontaneously broken discrete time-translation symmetry.
We observe a non-perturbative change in the decay rate of the order parameter, which is related to the long-lived stability of the magnetic domains in 2D.
arXiv Detail & Related papers (2022-05-10T13:04:43Z) - Unraveling the temperature dynamics and hot electron generation in
tunable gap-plasmon metasurface absorbers [0.0]
Localized plasmons formed in ultrathin metallic nanogaps can lead to robust absorption of incident light.
Plasmon metasurfaces based on this effect can efficiently generate energetic charge carriers, also known as hot electrons.
arXiv Detail & Related papers (2022-03-29T20:51:14Z) - Superradiance in dynamically modulated Tavis-Cumming model with spectral
disorder [62.997667081978825]
Superradiance is the enhanced emission of photons from quantum emitters collectively coupling to the same optical mode.
We study the interplay between superradiance and spectral disorder in a dynamically modulated Tavis-Cummings model.
arXiv Detail & Related papers (2021-08-18T21:29:32Z) - Temperature Controlled Open Quantum System Dynamics using Time-dependent
Variational Method [0.0]
The algorithm allows to control temperature variations of a harmonic finite size bath, when in contact with the quantum system.
Numerical analysis of the exciton relaxation dynamics in a small molecular cluster reveals that thermalization provides significant calculation speed up.
arXiv Detail & Related papers (2021-03-03T18:34:02Z) - Deterministic single-atom source of quasi-superradiant $N$-photon pulses [62.997667081978825]
Scheme operates with laser and cavity fields detuned from the atomic transition by much more than the excited-state hyperfine splitting.
This enables reduction of the dynamics to that of a simple, cavity-damped Tavis-Cummings model with the collective spin determined by the total angular momentum of the ground hyperfine level.
arXiv Detail & Related papers (2020-12-01T03:55:27Z)
This list is automatically generated from the titles and abstracts of the papers in this site.
This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.