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

Spin–Spin Coupling: One-Bond Coupling01:17

Spin–Spin Coupling: One-Bond Coupling

1.0K
Coupling interactions are strongest between NMR-active nuclei bonded to each other, where spin information can be transmitted directly through the pair of bonding electrons. While nuclei polarize their electrons to the opposite spins, the bonding electron pair has opposite spins. Configurations with antiparallel nuclear spins are expected to be lower in energy. When coupling makes antiparallel states more favorable, J is considered to have a positive value. The one-bond coupling constant, 1J,...
1.0K
Spin–Spin Coupling Constant: Overview01:08

Spin–Spin Coupling Constant: Overview

963
In bromoethane, the three methyl protons are coupled to the two methylene protons that are three bonds away. In accordance with the n+1 rule, the signal from the methyl protons is split into three peaks with 1:2:1 relative intensities. The methylene protons appear as a quartet, with the relative intensities of 1:3:3:1.
Qualitatively, any spin plus-half nucleus polarizes the spins of its electrons to the minus-half state. Consequently, the paired electron in the hydrogen–carbon bond must...
963
Spin–Spin Coupling: Two-Bond Coupling (Geminal Coupling)01:20

Spin–Spin Coupling: Two-Bond Coupling (Geminal Coupling)

1.1K
Two NMR-active nuclei bonded to a central atom can be involved in geminal or two-bond coupling. Geminal coupling is commonly seen between diastereotopic protons in chiral molecules and unsymmetrical alkenes, among others.
The central atom need not be NMR-active because its electrons are affected by the electron polarization of the spin-active atoms. However, spin information is transmitted less effectively than in one-bond coupling, and 2J values are usually weaker than 1J values. The energy of...
1.1K
NMR Spectroscopy: Spin–Spin Coupling01:08

NMR Spectroscopy: Spin–Spin Coupling

1.5K
The spin state of an NMR-active nucleus can have a slight effect on its immediate electronic environment. This effect propagates through the intervening bonds and affects the electronic environments of NMR-active nuclei up to three bonds away; occasionally, even farther. This phenomenon is called spin–spin coupling or J-coupling. Coupling interactions are mutual and result in small changes in the absorption frequencies of both nuclei involved. While nuclei of the same element are involved...
1.5K
Atomic Nuclei: Nuclear Spin State Overview01:03

Atomic Nuclei: Nuclear Spin State Overview

1.0K
NMR-active nuclei have energy levels called 'spin states' that are associated with the orientations of their nuclear magnetic moments. In the absence of a magnetic field, the nuclear magnetic moments are randomly oriented, and the spin states are degenerate. When an external magnetic field is applied, the spin states have only 2 + 1 orientations available to them. A proton with = ½ has two available orientations. Similarly, for a quadrupolar nucleus with a nuclear spin value of...
1.0K
¹H NMR: Interpreting Distorted and Overlapping Signals01:02

¹H NMR: Interpreting Distorted and Overlapping Signals

1.1K
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...
1.1K

You might also read

Related Articles

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

Sort by
Same author

Observation of disorder-free localization using a (2+1)D lattice gauge theory on a quantum processor.

Science (New York, N.Y.)·2026
Same author

Magnon hydrodynamics in an atomically thin ferromagnet.

Science (New York, N.Y.)·2026
Same author

Uncovering origins of heterogeneous superconductivity in La<sub>3</sub>Ni<sub>2</sub>O<sub>7</sub>.

Nature·2026
Same author

Probing critical phenomena in open quantum systems using atom arrays.

Science (New York, N.Y.)·2025
Same author

Scalable nanoscale positioning of highly coherent color centers in prefabricated diamond nanostructures.

Nature communications·2025
Same author

Spin squeezing in an ensemble of nitrogen-vacancy centres in diamond.

Nature·2025

Related Experiment Video

Updated: Jul 26, 2025

In Situ Monitoring of Diffusion of Guest Molecules in Porous Media Using Electron Paramagnetic Resonance Imaging
06:34

In Situ Monitoring of Diffusion of Guest Molecules in Porous Media Using Electron Paramagnetic Resonance Imaging

Published on: September 2, 2016

6.5K

Probing many-body dynamics in a two-dimensional dipolar spin ensemble.

E J Davis1, B Ye1, F Machado1,2

  • 1Department of Physics, University of California, Berkeley, CA USA.

Nature Physics
|June 16, 2023
PubMed
Summary

Measuring probe qubit decoherence reveals quantum dynamics of strongly interacting systems. This method characterizes system dimensionality, dynamics, and disorder using optically addressable spins in diamond.

Keywords:
Magnetic properties and materialsQuantum metrologyQuantum simulationSensors and biosensors

More Related Videos

Site Directed Spin Labeling and EPR Spectroscopic Studies of Pentameric Ligand-Gated Ion Channels
11:19

Site Directed Spin Labeling and EPR Spectroscopic Studies of Pentameric Ligand-Gated Ion Channels

Published on: July 4, 2016

10.7K
Study of Protein Dynamics via Neutron Spin Echo Spectroscopy
08:03

Study of Protein Dynamics via Neutron Spin Echo Spectroscopy

Published on: April 13, 2022

2.1K

Related Experiment Videos

Last Updated: Jul 26, 2025

In Situ Monitoring of Diffusion of Guest Molecules in Porous Media Using Electron Paramagnetic Resonance Imaging
06:34

In Situ Monitoring of Diffusion of Guest Molecules in Porous Media Using Electron Paramagnetic Resonance Imaging

Published on: September 2, 2016

6.5K
Site Directed Spin Labeling and EPR Spectroscopic Studies of Pentameric Ligand-Gated Ion Channels
11:19

Site Directed Spin Labeling and EPR Spectroscopic Studies of Pentameric Ligand-Gated Ion Channels

Published on: July 4, 2016

10.7K
Study of Protein Dynamics via Neutron Spin Echo Spectroscopy
08:03

Study of Protein Dynamics via Neutron Spin Echo Spectroscopy

Published on: April 13, 2022

2.1K

Area of Science:

  • Quantum Dynamics
  • Condensed Matter Physics
  • Quantum Information Science

Background:

  • Characterizing quantum dynamics of large, interacting systems is computationally challenging.
  • Measuring the full many-body state becomes intractable as system size increases.
  • An alternative is to infer system properties from the noise generated by many-body dynamics, observable via probe qubit decoherence.

Purpose of the Study:

  • To investigate how probe qubit decoherence dynamics can reveal information about a strongly interacting many-body system.
  • To experimentally characterize static and dynamical properties of interacting magnetic dipoles using optically addressable probe spins.

Main Methods:

  • Utilized optically addressable probe spins (nitrogen-vacancy colour centres) in diamond.
  • Employed a many-body ensemble of substitutional nitrogen impurities as the interacting system.
  • Analyzed the decoherence profile of the probe spins to extract information about the many-body system.

Main Results:

  • Demonstrated that the probe spins' decoherence profile naturally encodes the many-body system's dimensionality, dynamics, and disorder.
  • Showcased direct control over the spectral properties of the many-body system.
  • Established a link between probe decoherence and the underlying quantum dynamics.

Conclusions:

  • Probe qubit decoherence is a viable method for characterizing complex quantum systems.
  • The experimental platform in diamond allows for detailed study of interacting spin systems.
  • Potential applications in quantum sensing and quantum simulation are highlighted.