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: Long-Range Coupling01:27

¹H NMR: Long-Range Coupling

2.4K
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...
2.4K
Spin–Spin Coupling Constant: Overview01:08

Spin–Spin Coupling Constant: Overview

1.2K
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...
1.2K
Spin–Spin Coupling: Three-Bond Coupling (Vicinal Coupling)01:22

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

1.3K
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...
1.3K
NMR Spectroscopy: Spin–Spin Coupling01:08

NMR Spectroscopy: Spin–Spin Coupling

3.4K
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...
3.4K
Spin–Spin Coupling: Two-Bond Coupling (Geminal Coupling)01:20

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

1.5K
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...
1.5K
Spin–Spin Coupling: One-Bond Coupling01:17

Spin–Spin Coupling: One-Bond Coupling

1.2K
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,...
1.2K

You might also read

Related Articles

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

Sort by
Same author

Anomalous Subkelvin Thermal Frequency Shifts of Ultranarrow Linewidth Solid State Emitters.

Physical review letters·2024
Same author

Experimental Analysis of Energy Transfers between a Quantum Emitter and Light Fields.

Physical review letters·2024
Same author

Multi-mode heterodyne laser interferometry realized via software defined radio.

Optics express·2023
Same author

Correlations between clinical motor scores and CMAP in patients with type 2 spinal muscular amyotrophy treated with nusinersen.

Archives de pediatrie : organe officiel de la Societe francaise de pediatrie·2023
Same author

Validation of quantitative real-time polymerase chain reaction for detection of Legionella pneumophila in hospital water networks.

The Journal of hospital infection·2023
Same author

Cochlear implantation in advanced otosclerosis: utility of pre-operative radiological assessment in predicting intra-operative difficulty and final electrode position.

The Journal of laryngology and otology·2023

Related Experiment Video

Updated: May 4, 2026

Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection
12:57

Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection

Published on: October 13, 2017

8.3K

Strain-mediated coupling in a quantum dot-mechanical oscillator hybrid system.

I Yeo1, P-L de Assis2, A Gloppe3

  • 11] Nanophysics et Semiconductors Joint Team, Institut Néel, CNRS - Université Joseph Fourier, 38042 Grenoble, France [2] Nanophysics et Semiconductors Joint Team, CEA/INAC/SP2M and Université Joseph Fourier, 38054 Grenoble, France.

Nature Nanotechnology
|December 24, 2013
PubMed
Summary

Researchers created a novel solid-state hybrid system coupling a quantum dot to a nanoresonator. This system achieves ultrastrong coupling, advancing quantum technologies and exploring the quantum-classical boundary.

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

9.0K
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

13.9K

Related Experiment Videos

Last Updated: May 4, 2026

Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection
12:57

Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection

Published on: October 13, 2017

8.3K
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

9.0K
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

13.9K

Area of Science:

  • Quantum physics
  • Nanotechnology
  • Solid-state physics

Background:

  • Hybrid systems coupling quantum dots to mechanical resonators are emerging.
  • These systems allow manipulation of macroscopic quantum properties.
  • Applications include quantum information and quantum-classical boundary studies.

Purpose of the Study:

  • To experimentally realize a monolithic solid-state hybrid system.
  • To achieve ultrastrong coupling between a quantum dot and mechanical resonator.
  • To explore strain-mediated coupling in such systems.

Main Methods:

  • Embedding a quantum dot within a nanowire with discrete mechanical resonances.
  • Utilizing material strain to modulate the quantum dot transition energy.
  • Employing optical and mechanical spectroscopy for characterization.

Main Results:

  • Demonstrated a monolithic solid-state hybrid system.
  • Achieved a large exciton-phonon coupling strength (g0).
  • Found g0/2π nearly equals the mechanical frequency, defining the ultrastrong coupling regime.

Conclusions:

  • The developed system offers high light-extraction efficiency and strong coupling.
  • This platform is promising for quantum information processing.
  • It provides a new avenue for investigating quantum-classical phenomena.