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

1.4K
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...
1.4K
The Quantum-Mechanical Model of an Atom02:45

The Quantum-Mechanical Model of an Atom

56.1K
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.
56.1K
¹H NMR: Long-Range Coupling01:27

¹H NMR: Long-Range Coupling

2.5K
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...
2.5K
The de Broglie Wavelength02:32

The de Broglie Wavelength

32.6K
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...
32.6K
2D NMR: Heteronuclear Single-Quantum Correlation Spectroscopy (HSQC)01:19

2D NMR: Heteronuclear Single-Quantum Correlation Spectroscopy (HSQC)

1.3K
Heteronuclear single-quantum correlation spectroscopy (HSQC) is a 2D NMR technique that reveals one-bond correlations between hydrogen and a heteronucleus. The HSQC experiment is similar to the heteronuclear correlation experiment (HETCOR) but is more sensitive. In the HSQC spectrum, the proton chemical shift is plotted on the horizontal F2 axis, while the 13C chemical shift is plotted on the vertical F1 axis. The corresponding proton and 13C spectra are also shown. The HSQC contour plot does...
1.3K
2D NMR: Overview of Heteronuclear Correlation Techniques01:18

2D NMR: Overview of Heteronuclear Correlation Techniques

657
Heteronuclear correlation spectroscopy is an analytical technique that investigates the coupling between different types of nuclei, often a proton and an X-nucleus, such as carbon-13 or nitrogen-15. This method is commonly used in nuclear magnetic resonance (NMR) spectroscopy to gain insights into complex chemical compounds' structural and compositional aspects. A typical heteronuclear correlation spectrum displays X-nucleus chemical shifts on one axis and a proton spectrum on the other...
657

You might also read

Related Articles

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

Sort by
Same author

From fluctuating entropic neck to Rosenfeld-Adam-Gibbs crossover dynamics in supercooled liquids.

The Journal of chemical physics·2026
Same author

Coherent biexciton transport in the presence of exciton-exciton annihilation in molecular aggregates.

The Journal of chemical physics·2026
Same author

Cooperative elastic mechanism of activated structural relaxation in glassy liquids.

The Journal of chemical physics·2026
Same author

Memory control of ice growth during non-equilibrium freezing of water.

The Journal of chemical physics·2026
Same author

Why Helices Rarely Emerge in Simulations of Polymer Collapse: Geometric and Cooperative Routes to Chiral Condensates.

The journal of physical chemistry. B·2026
Same author

Free-energy landscape and morphological transitions of semiflexible polymers.

The Journal of chemical physics·2026

Related Experiment Video

Updated: Dec 21, 2025

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

9.5K

Quantum Coherence and Its Signatures in Extended Quantum Systems.

Rajesh Dutta1, Biman Bagchi1

  • 1SSCU, Indian Institute of Science, Bangalore 560012, India.

The Journal of Physical Chemistry. B
|May 12, 2020
PubMed
Summary

Quantum coherence in noisy environments persists longer than expected, influencing population distribution and exciton localization. This study reveals coherence dynamics in excited bath states and their impact on quantum systems.

More Related Videos

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
09:23

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

Published on: May 30, 2014

14.9K
A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
07:56

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

Published on: September 5, 2019

8.8K

Related Experiment Videos

Last Updated: Dec 21, 2025

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

9.5K
Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
09:23

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

Published on: May 30, 2014

14.9K
A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
07:56

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

Published on: September 5, 2019

8.8K

Area of Science:

  • Quantum dynamics
  • Condensed matter physics
  • Spectroscopy

Background:

  • Quantum coherence is crucial for quantum systems but its behavior in noisy, non-Markovian environments is not fully understood.
  • Understanding coherence is key to controlling static and dynamic responses in strongly correlated quantum systems.
  • Exciton localization phenomena, similar to Anderson localization, are influenced by quantum coherence.

Purpose of the Study:

  • To elucidate the role of quantum coherence in the dynamics of strongly correlated quantum systems under non-Markovian conditions.
  • To investigate the influence of coherence on population distribution and exciton localization.
  • To derive analytical relationships between steady-state coherence and exciton population distribution.

Main Methods:

  • Theoretical analysis of quantum systems subjected to static off-diagonal coupling and time-correlated noise.
  • Modeling of extended conjugated polymer systems and Fenna-Matthews-Olson (FMO) complex subunits.
  • Derivation of analytical expressions for steady-state coherence and its dependence on system parameters and temperature.

Main Results:

  • Quantum coherence can survive significantly longer than bath correlation times in noisy environments.
  • Coherence propagation through excited bath states leads to non-Boltzmann population distributions, vanishing at high temperatures.
  • Analytical results show steady-state coherence is governed by interchromophoric coupling (J) in equilibrium bath states and fluctuation strength (Vd) in excited bath states for correlated baths.
  • For uncorrelated baths, excited bath state coherence dominates at low temperatures, while equilibrium coherence dominates at high temperatures.
  • In exciton localization, a breakdown of Markovian predictions is observed, with diffusion coefficient proportional to fluctuation rate at low fluctuation limits.

Conclusions:

  • Quantum coherence plays a vital role in determining the dynamics and localization properties of quantum systems in non-Markovian environments.
  • The interplay between coherence, bath properties, and system parameters dictates population distribution and localization behavior.
  • The findings challenge standard Markovian assumptions and highlight the importance of considering non-Markovian effects and excited bath states.