High-harmonic spectra of hexagonal nanoribbons from real-space
time-dependent Schr\"odinger calculations
- URL: http://arxiv.org/abs/2101.06970v1
- Date: Mon, 18 Jan 2021 10:20:03 GMT
- Title: High-harmonic spectra of hexagonal nanoribbons from real-space
time-dependent Schr\"odinger calculations
- Authors: Helena Dr\"ueke and Dieter Bauer
- Abstract summary: We investigate harmonic spectra from finite, hexagonal nanoribbons, such as graphene and hexagonal boron nitride, in armchair and zig-zag configuration.
The symmetry of the system explains the existence and intensity of the emitted harmonics.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: High-harmonic spectroscopy is a promising candidate for imaging electronic
structures and dynamics in condensed matter by all-optical means and with
unprecedented temporal resolution. We investigate harmonic spectra from finite,
hexagonal nanoribbons, such as graphene and hexagonal boron nitride, in
armchair and zig-zag configuration. The symmetry of the system explains the
existence and intensity of the emitted harmonics.
Related papers
- Formation and Controlling of Optical Hopfions in High Harmonic Generation [0.0]
Toroidal vortex is a novel and exotic structured light with potential applications in photonic topology and quantum information.
We show that the spatial distribution of harmonic spectra reveal unique structures, which are kinds of high-order topological toroidal vortex.
arXiv Detail & Related papers (2024-10-08T13:33:29Z) - Coherent multidimensional spectroscopy in polariton systems [0.0]
Fast dynamics of molecular polaritonics is scrutinized theoretically through the implementation of two-dimensional spectroscopy protocols.
We derive conceptually simple and computationally efficient formulas to calculate two-dimensional spectra for molecules.
Our theoretical method provides a deeper insight in those processes that yield relevant signals in multidimensional molecular spectroscopy.
arXiv Detail & Related papers (2024-03-07T18:37:52Z) - An Exact Expression for Multidimensional Spectroscopy of a Spin-Boson
Hamiltonian [0.0]
We provide an exact expression for multidimensional spectra of a spin-boson Hamiltonian up to arbitrary order of electric field interaction.
We demonstrate the utility of this expression by modeling polaron formation and coherent exciton-phonon coupling in quantum dots.
arXiv Detail & Related papers (2023-11-09T15:49:37Z) - Resonant Parametric Photon Generation in Waveguide-coupled Quantum Emitter Arrays [83.88591755871734]
We have developed a theory of parametric photon generation in the waveguides coupled to arrays of quantum emitters with temporally modulated resonance frequencies.
Such generation can be interpreted as a dynamical Casimir effect.
We demonstrate numerically and analytically how the emission directionality and photon-photon correlations can be controlled by the phases of the modulation.
arXiv Detail & Related papers (2023-02-24T18:07:49Z) - Calculating non-linear response functions for multi-dimensional
electronic spectroscopy using dyadic non-Markovian quantum state diffusion [68.8204255655161]
We present a methodology for simulating multi-dimensional electronic spectra of molecular aggregates with coupling electronic excitation to a structured environment.
A crucial aspect of our approach is that we propagate the NMQSD equation in a doubled system Hilbert space but with the same noise.
arXiv Detail & Related papers (2022-07-06T15:30:38Z) - Localized vibrational modes in waveguide quantum optomechanics with
spontaneously broken PT symmetry [117.44028458220427]
We study theoretically two vibrating quantum emitters trapped near a one-dimensional waveguide and interacting with propagating photons.
In the regime of strong optomechanical interaction the light-induced coupling of emitter vibrations can lead to formation of spatially localized vibration modes, exhibiting parity-time symmetry breaking.
arXiv Detail & Related papers (2021-06-29T12:45:44Z) - Entangled Photons Enabled Time- and Frequency-Resolved Coherent Raman
Spectroscopy in Condensed Phase Molecules [1.115958674023625]
We develop an ultrafast frequency-resolved Raman spectroscopy with entangled photons for polyatomic molecules in condensed phases.
We develop a microscopic theory for this Raman spectroscopy, revealing the electronic coherence dynamics.
The heterodyne-detected Raman signal is further developed to capture the phases of electronic coherence and emission in real-time domain.
arXiv Detail & Related papers (2021-06-21T11:15:42Z) - Enhanced generation of non-degenerate photon-pairs in nonlinear
metasurfaces [55.41644538483948]
Non-degenerate photon-pair generation can enable orders-of-surface enhancement of the photon rate and spectral brightness.
We show that the entanglement of the photon-pairs can be tuned by varying the pump polarization, which can underpin future advances and applications of ultra-compact quantum light sources.
arXiv Detail & Related papers (2021-04-15T08:20:17Z) - Auto-heterodyne characterization of narrow-band photon pairs [68.8204255655161]
We describe a technique to measure photon pair joint spectra by detecting the time-correlation beat note when non-degenerate photon pairs interfere at a beamsplitter.
The technique is well suited to characterize pairs of photons, each of which can interact with a single atomic species.
arXiv Detail & Related papers (2021-01-08T18:21:30Z) - High-order harmonic generation in hexagonal nanoribbons [0.0]
Generation of high-order harmonics in finite, hexagonal nanoribbons is simulated.
System describes for example graphene or hexagonal boron nitride.
Characteristic features in the harmonic spectra for the finite ribbons are analyzed.
arXiv Detail & Related papers (2021-01-08T11:03:52Z) - Hyperentanglement in structured quantum light [50.591267188664666]
Entanglement in high-dimensional quantum systems, where one or more degrees of freedom of light are involved, offers increased information capacities and enables new quantum protocols.
Here, we demonstrate a functional source of high-dimensional, noise-resilient hyperentangled states encoded in time-frequency and vector-vortex structured modes.
We generate highly entangled photon pairs at telecom wavelength that we characterise via two-photon interference and quantum state tomography, achieving near-unity visibilities and fidelities.
arXiv Detail & Related papers (2020-06-02T18:00:04Z)
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.