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 Constant: Overview01:08

Spin–Spin Coupling Constant: Overview

1.0K
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...
1.0K
Spin–Spin Coupling: Two-Bond Coupling (Geminal Coupling)01:20

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

1.2K
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...
1.2K
Spin–Spin Coupling: One-Bond Coupling01:17

Spin–Spin Coupling: One-Bond Coupling

1.1K
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,...
1.1K

You might also read

Related Articles

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

Sort by
Same author

Impact of the local valley splitting on the coherence of conveyor-belt spin shuttling in <sup>28</sup>Si/SiGe.

Nature communications·2026
Same author

Highly Tunable Two-Qubit Interactions in Si/SiGe Quantum Dots by Interchanging the Roles of Qubit-Defining Gates.

Nano letters·2026
Same author

Two-qubit logic and teleportation with mobile spin qubits in silicon.

Nature·2026
Same author

Buried Unstrained Germanium Channels: A Lattice-Matched Platform for Quantum Technology.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2026
Same author

Many-body interferometry with semiconductor spins.

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

A Luminol-Based, Peroxide-Free Fenton Chemiluminescence System Driven by Cu(I)-Polyethylenimine-Lipoic Acid Nanoflowers for Ultrasensitive SARS-CoV-2 Immunoassay.

Biosensors·2026

Related Experiment Video

Updated: Sep 19, 2025

Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping
14:58

Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping

Published on: June 3, 2015

14.9K

High-fidelity single-spin shuttling in silicon.

Maxim De Smet1,2, Yuta Matsumoto1,2, Anne-Marije J Zwerver1,2

  • 1QuTech, Delft University of Technology, Delft, the Netherlands.

Nature Nanotechnology
|June 9, 2025
PubMed
Summary

Researchers demonstrated high-fidelity electron shuttling in silicon quantum dots, a key advance for building scalable quantum processors. This technique preserves quantum spin states over long distances, improving connectivity for future quantum computing applications.

More Related Videos

Hybrid Microdrive System with Recoverable Opto-Silicon Probe and Tetrode for Dual-Site High Density Recording in Freely Moving Mice
08:57

Hybrid Microdrive System with Recoverable Opto-Silicon Probe and Tetrode for Dual-Site High Density Recording in Freely Moving Mice

Published on: August 10, 2019

11.1K
All-electronic Nanosecond-resolved Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics
11:33

All-electronic Nanosecond-resolved Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics

Published on: January 19, 2018

9.9K

Related Experiment Videos

Last Updated: Sep 19, 2025

Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping
14:58

Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping

Published on: June 3, 2015

14.9K
Hybrid Microdrive System with Recoverable Opto-Silicon Probe and Tetrode for Dual-Site High Density Recording in Freely Moving Mice
08:57

Hybrid Microdrive System with Recoverable Opto-Silicon Probe and Tetrode for Dual-Site High Density Recording in Freely Moving Mice

Published on: August 10, 2019

11.1K
All-electronic Nanosecond-resolved Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics
11:33

All-electronic Nanosecond-resolved Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics

Published on: January 19, 2018

9.9K

Area of Science:

  • Quantum Computing
  • Semiconductor Physics
  • Materials Science

Background:

  • Quantum processor performance relies heavily on qubit connectivity.
  • High-fidelity electron transport in semiconductor spin qubits is crucial for scalability.
  • Existing electron shuttling methods face challenges in maintaining spin coherence over distance.

Purpose of the Study:

  • To demonstrate high-fidelity electron shuttling in semiconductor quantum dots.
  • To investigate methods for increasing qubit connectivity through physical displacement.
  • To improve spin coherence during electron transport for quantum information processing.

Main Methods:

  • Electron shuttling experiments using electric gate potentials in isotopically purified Si/SiGe heterostructures.
  • Comparison of bucket-brigade shuttling with conveyor-mode shuttling using travelling-wave potentials.
  • Measurement of spin coherence decay and fidelity during electron transport over extended distances.

Main Results:

  • Conveyor-mode shuttling achieved spin coherence an order of magnitude better than bucket-brigade shuttling.
  • Electrons were displaced over an effective distance of 10 μm in under 200 ns.
  • Preservation of the electron spin state with an average fidelity of 99.5% was achieved.

Conclusions:

  • Electron shuttling is a viable technique for enhancing connectivity in semiconductor quantum processors.
  • The developed conveyor-mode shuttling method significantly improves spin coherence and fidelity.
  • These findings provide a pathway for realizing large-scale quantum processors utilizing electron shuttling within and between qubit arrays.