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

1.5K
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,...
1.5K
Spin–Spin Coupling: Two-Bond Coupling (Geminal Coupling)01:20

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

1.7K
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...
1.7K
Spin–Spin Coupling: Three-Bond Coupling (Vicinal Coupling)01:22

Spin–Spin Coupling: Three-Bond Coupling (Vicinal Coupling)

1.5K
Vicinal or three-bond coupling is commonly observed between protons attached to adjacent carbons. Here, nuclear spin information is primarily transferred via electron spin interactions between adjacent C‑H bond orbitals. This generally favors the antiparallel arrangement of spins, so 3J values are usually positive.
The extent of coupling depends on the C‑C bond length, the two H‑C‑C angles, any electron-withdrawing substituents, and the dihedral angle between the involved orbitals. The...
1.5K
Quantum Numbers02:43

Quantum Numbers

50.1K
It is said that the energy of an electron in an atom is quantized; that is, it can be equal only to certain specific values and can jump from one energy level to another but not transition smoothly or stay between these levels.
50.1K
Noble Gases02:54

Noble Gases

22.8K

The elements in group 18 are noble gases (helium, neon, argon, krypton, xenon, and radon). They earned the name “noble” because they were assumed to be nonreactive since they have filled valence shells. In 1962, Dr. Neil Bartlett at the University of British Columbia proved this assumption to be false.
22.8K
NMR Spectroscopy: Spin–Spin Coupling01:08

NMR Spectroscopy: Spin–Spin Coupling

3.2K
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...
3.2K

You might also read

Related Articles

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

Sort by
Same author

Memory-Assisted Nonlocal Interferometer toward Long-Baseline Telescopes.

Physical review letters·2026
Same author

10<sup>-21</sup>-Level optical frequency dissemination over 2067 km of noise-loaded field-deployed fiber network.

Light, science & applications·2026
Same author

Entanglement Swapping Enables the Practical Security of Quantum Cryptography.

Entropy (Basel, Switzerland)·2026
Same author

Gaussian boson sampling with 1,024 squeezed states in 8,176 modes.

Nature·2026
Same author

Taming Rydberg Decay with Measurement-Based Quantum Computation.

Physical review letters·2026
Same author

Non-Line-of-Sight Single-Pixel Imaging Using Polarization Speckle Modulation.

Physical review letters·2026

Related Experiment Video

Updated: Feb 3, 2026

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

9.7K

Highly Controllable and Robust 2D Spin-Orbit Coupling for Quantum Gases.

Wei Sun1,2, Bao-Zong Wang1,2,3,4, Xiao-Tian Xu1,2

  • 1Shanghai Branch, National Research Center for Physical Sciences at Microscale and Department of Modern Physics, University of Science and Technology of China, Shanghai 201315, China.

Physical Review Letters
|October 27, 2018
PubMed
Summary

Researchers created a stable 2D spin-orbit coupling with a topological band structure. This robust system allows for exploring quantum many-body effects and novel topology in Bose-Einstein condensates.

More Related Videos

Gradient Echo Quantum Memory in Warm Atomic Vapor
10:00

Gradient Echo Quantum Memory in Warm Atomic Vapor

Published on: November 11, 2013

13.2K
Robust and Highly Reproducible Generation of Cortical Brain Organoids for Modelling Brain Neuronal Senescence In Vitro
05:40

Robust and Highly Reproducible Generation of Cortical Brain Organoids for Modelling Brain Neuronal Senescence In Vitro

Published on: May 5, 2022

4.5K

Related Experiment Videos

Last Updated: Feb 3, 2026

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

9.7K
Gradient Echo Quantum Memory in Warm Atomic Vapor
10:00

Gradient Echo Quantum Memory in Warm Atomic Vapor

Published on: November 11, 2013

13.2K
Robust and Highly Reproducible Generation of Cortical Brain Organoids for Modelling Brain Neuronal Senescence In Vitro
05:40

Robust and Highly Reproducible Generation of Cortical Brain Organoids for Modelling Brain Neuronal Senescence In Vitro

Published on: May 5, 2022

4.5K

Area of Science:

  • Quantum physics
  • Condensed matter physics
  • Atomic physics

Background:

  • Spin-orbit coupling is crucial for understanding topological phases of matter.
  • Previous methods for realizing 2D spin-orbit coupling faced limitations in control and stability.
  • Topological nontrivial band structures are key to novel quantum phenomena.

Purpose of the Study:

  • To realize a robust and highly controllable two-dimensional (2D) spin-orbit (SO) coupling.
  • To engineer a system with a topological nontrivial band structure.
  • To enable exploration of exotic quantum many-body effects and nonequilibrium dynamics.

Main Methods:

  • Utilizing a retro-reflected 2D optical lattice.
  • Implementing phase-tunable Raman couplings within an antisymmetric Raman lattice structure.
  • Generating 2D SO coupling with precise inversion and C4 symmetries.

Main Results:

  • Achieved a robust and controllable 2D spin-orbit coupling.
  • Demonstrated a topological nontrivial band structure with enlarged topological regions.
  • Obtained a Bose-Einstein condensate lifetime of several seconds for the 2D SO coupled system.

Conclusions:

  • The new realization offers precise control over 2D spin-orbit coupling and topology.
  • Extended coherence times open possibilities for studying interaction effects.
  • This platform facilitates research into exotic quantum phenomena and nonequilibrium dynamics with novel topology.