Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

¹H NMR: Interpreting Distorted and Overlapping Signals01:02

¹H NMR: Interpreting Distorted and Overlapping Signals

1.7K
Spin systems where the difference in chemical shifts of the coupled nuclei is greater than ten times J are called first-order spin systems. These nuclei are weakly coupled, and their chemical shifts and coupling constant can generally be estimated from the well-separated signals in the spectrum.
As Δν decreases and the signals move closer, the doublets appear increasingly distorted. The intensities of the inner lines increase at the cost of those of the outer lines as the signals are...
1.7K
Intensity Of Electromagnetic Waves01:22

Intensity Of Electromagnetic Waves

6.1K
The energy transport per unit area per unit time, or the Poynting vector, gives the energy flux of an electromagnetic wave at any specific time. For a plane electromagnetic wave with E0 and B0 as the peak electric and magnetic fields and traveling along the x-axis, the time-varying energy flux can be given by the following equation:
6.1K
The Quantum-Mechanical Model of an Atom02:45

The Quantum-Mechanical Model of an Atom

61.2K
Shortly after de Broglie published his ideas that the electron in a hydrogen atom could be better thought of as being a circular standing wave instead of a particle moving in quantized circular orbits, Erwin Schrödinger extended de Broglie’s work by deriving what is now known as the Schrödinger equation. When Schrödinger applied his equation to hydrogen-like atoms, he was able to reproduce Bohr’s expression for the energy and, thus, the Rydberg formula governing hydrogen spectra.
61.2K
Electromagnetic Wave Equation01:24

Electromagnetic Wave Equation

2.4K
Maxwell's equations for electromagnetic fields are related to source charges, either static or moving. These fields act on a test charge, whose trajectory can thus be determined using suitable boundary conditions. The objective of electromagnetism is thus theoretically complete.
However, although electric and magnetic fields were first introduced as mathematical constructs to simplify the description of mutual forces between charges, a natural question emerges from Maxwell's equations:...
2.4K
¹H NMR: Long-Range Coupling01:27

¹H NMR: Long-Range Coupling

2.9K
The coupling interactions of nuclei across four or more bonds are usually weak, with J values less than 1 Hz. While these are usually not observed in spectra, the presence of multiple bonds along the coupling pathway can result in observable long-range coupling.
In alkenes, spin information is communicated via σ–π overlap, as seen in allylic (four-bond) and homoallylic (five-bond) couplings. These coupling interactions are stronger when the σ bond is parallel to the alkene...
2.9K
The de Broglie Wavelength02:32

The de Broglie Wavelength

34.3K
In the macroscopic world, objects that are large enough to be seen by the naked eye follow the rules of classical physics. A billiard ball moving on a table will behave like a particle; it will continue traveling in a straight line unless it collides with another ball, or it is acted on by some other force, such as friction. The ball has a well-defined position and velocity or well-defined momentum, p = mv, which is defined by mass m and velocity v at any given moment. This is the typical...
34.3K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Magnetometry with a space-based differential atom interferometer.

Nature communications·2026
Same author

Interference-Limited Absorption in Dense Molecular Nanolayers Near Reflecting Surfaces.

The journal of physical chemistry letters·2026
Same author

Collective Rabi-Driven Vibrational Activation in Molecular Polaritons.

Nano letters·2026
Same author

Density-functional tight binding meets Maxwell: unraveling the mysteries of (strong) light-matter coupling efficiently.

Nanophotonics (Berlin, Germany)·2025
Same author

Molecular Polariton Dynamics in Realistic Cavities.

Journal of chemical theory and computation·2025
Same author

Nearfield control over magnetic light-matter interactions.

Light, science & applications·2025

Related Experiment Video

Updated: Mar 18, 2026

Excitonic Hamiltonians for Calculating Optical Absorption Spectra and Optoelectronic Properties of Molecular Aggregates and Solids
08:04

Excitonic Hamiltonians for Calculating Optical Absorption Spectra and Optoelectronic Properties of Molecular Aggregates and Solids

Published on: May 27, 2020

9.0K

Non-Hermitian wave packet approximation for coupled two-level systems in weak and intense fields.

Raiju Puthumpally-Joseph1, Maxim Sukharev2, Eric Charron1

  • 1Institut des Sciences Moléculaires d'Orsay (ISMO), CNRS, Univ. Paris-Sud, Université Paris-Saclay, F-91405 Orsay, France.

The Journal of Chemical Physics
|July 9, 2016
PubMed
Summary

We present a new approximation for optical Bloch equations, simplifying quantum system analysis. This method accurately models coherence dynamics using wave functions, not density matrices, for laser-matter interactions.

More Related Videos

Generation and Coherent Control of Pulsed Quantum Frequency Combs
06:42

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

9.8K
Lens-free Video Microscopy for the Dynamic and Quantitative Analysis of Adherent Cell Culture
09:04

Lens-free Video Microscopy for the Dynamic and Quantitative Analysis of Adherent Cell Culture

Published on: February 23, 2018

10.1K

Related Experiment Videos

Last Updated: Mar 18, 2026

Excitonic Hamiltonians for Calculating Optical Absorption Spectra and Optoelectronic Properties of Molecular Aggregates and Solids
08:04

Excitonic Hamiltonians for Calculating Optical Absorption Spectra and Optoelectronic Properties of Molecular Aggregates and Solids

Published on: May 27, 2020

9.0K
Generation and Coherent Control of Pulsed Quantum Frequency Combs
06:42

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

9.8K
Lens-free Video Microscopy for the Dynamic and Quantitative Analysis of Adherent Cell Culture
09:04

Lens-free Video Microscopy for the Dynamic and Quantitative Analysis of Adherent Cell Culture

Published on: February 23, 2018

10.1K

Area of Science:

  • Quantum optics
  • Atomic physics
  • Condensed matter theory

Background:

  • Optical Bloch equations describe light-matter interactions in two-level systems.
  • Traditional methods using density matrices can be computationally intensive.
  • Accurate modeling of coherence and decoherence is crucial for quantum technologies.

Purpose of the Study:

  • To introduce a simplified, non-Hermitian Schrödinger-type approximation for optical Bloch equations.
  • To provide a computationally efficient method for analyzing quantum system dynamics.
  • To accurately describe coherence and decoherence under various laser field strengths.

Main Methods:

  • Developed a non-Hermitian Schrödinger-type approximation.
  • Replaced density matrix propagation with wave function propagation.
  • Incorporated relaxation and dephasing via time-dependent gain and decay rates.
  • Applied the formalism to electromagnetic radiation scattering and absorption.

Main Results:

  • The approximation accurately describes coherence and decoherence dynamics.
  • It is valid for both weak and strong laser fields.
  • Population dynamics accuracy is reduced, but coherence is preserved.
  • The method simplifies the analysis of light-matter interactions in two-level systems.

Conclusions:

  • The non-Hermitian approximation offers a complete and accurate description of coherence dynamics.
  • This approach simplifies the study of quantum systems interacting with electromagnetic fields.
  • The method is suitable for analyzing scattering and absorption phenomena in emitters.