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

Social Exchange Theory02:06

Social Exchange Theory

40.8K
We have discussed why we form relationships, what attracts us to others, and different types of love. But what determines whether we are satisfied with and stay in a relationship? One theory that provides an explanation is social exchange theory. According to social exchange theory, we act as naïve economists in keeping a tally of the ratio of costs and benefits of forming and maintaining a relationship with others (Rusbult & Van Lange, 2003).
40.8K
Social Exchange Theory01:26

Social Exchange Theory

462
As formulated by John Thibaut and Harold Kelley, Social Exchange Theory explains human relationships as economic-like exchanges that maximize rewards and minimize costs. This theory suggests that individuals engage in relationships to gain benefits and reduce burdens, similar to economic transactions. It has been widely applied to various types of relationships, including romantic, professional, and social interactions.Rewards and Costs in RelationshipsRelationship rewards include emotional...
462
Gas Exchange and Transport01:20

Gas Exchange and Transport

76.9K
Gas exchange, the intake of molecular oxygen (O2) from the environment and the outflow of carbon dioxide (CO2) into the environment, is necessary for cellular function. Gas exchange during respiration occurs largely via the movement of gas molecules along pressure gradients. Gas travels from areas of higher partial pressure to areas of lower partial pressure. In mammals, gas exchange occurs in the alveoli of the lungs, which are adjacent to capillaries and share a membrane with them.
76.9K
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
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 Constant: Overview01:08

Spin–Spin Coupling Constant: Overview

1.5K
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...
1.5K

You might also read

Related Articles

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

Sort by
Same author

Efficient Quantum Simulation for Translationally Invariant Systems.

Physical review letters·2026
Same author

Three-Carrier Spin Blockade and Coupling in Bilayer Graphene Double Quantum Dots.

Physical review letters·2024
Same author

Diamond spins making waves again.

Proceedings of the National Academy of Sciences of the United States of America·2024
Same author

Ultra-narrow inhomogeneous spectral distribution of telecom-wavelength vanadium centres in isotopically-enriched silicon carbide.

Nature communications·2023
Same author

Probing the Jaynes-Cummings Ladder with Spin Circuit Quantum Electrodynamics.

Physical review letters·2023
Same author

Author Correction: Reducing charge noise in quantum dots by using thin silicon quantum wells.

Nature communications·2023
Same journal

Erratum: Bacterial Turbulence at Compressible Fluid Interfaces [Phys. Rev. Lett. 136, 138301 (2026)].

Physical review letters·2026
Same journal

Unveiling Light-Quark Yukawa Flavor Structure via Dihadron Fragmentation at Lepton Colliders.

Physical review letters·2026
Same journal

Adaptable Route to Fast Coherent State Transport via Bang-Bang-Bang Protocols.

Physical review letters·2026
Same journal

Topological Transition and Emergence of Elasticity of Dislocation in Skyrmion Lattice: Beyond Kittel's Magnetic-Polar Analogy.

Physical review letters·2026
Same journal

Pound-Drever-Hall Method for Superconducting-Qubit Readout.

Physical review letters·2026
Same journal

Coupling a ^{73}Ge Nuclear Spin to an Electrostatically Defined Quantum Dot in Silicon.

Physical review letters·2026
See all related articles

Related Experiment Video

Updated: Feb 2, 2026

Spin Saturation Transfer Difference NMR SSTD NMR: A New Tool to Obtain Kinetic Parameters of Chemical Exchange Processes
11:44

Spin Saturation Transfer Difference NMR SSTD NMR: A New Tool to Obtain Kinetic Parameters of Chemical Exchange Processes

Published on: November 12, 2016

18.6K

Quadrupolar Exchange-Only Spin Qubit.

Maximilian Russ1, J R Petta2, Guido Burkard1

  • 1Department of Physics, University of Konstanz, D-78457 Konstanz, Germany.

Physical Review Letters
|November 10, 2018
PubMed
Summary
This summary is machine-generated.

We introduce a robust quadrupolar exchange-only spin qubit using four electrons in three quantum dots. This design minimizes decoherence from charge noise and nuclear spins, enhancing quantum computing stability.

More Related Videos

Lipid Exchange Assay in Living Cells
08:59

Lipid Exchange Assay in Living Cells

Published on: March 21, 2025

1.1K
Detection of Viruses from Bioaerosols Using Anion Exchange Resin
06:10

Detection of Viruses from Bioaerosols Using Anion Exchange Resin

Published on: August 22, 2018

8.7K

Related Experiment Videos

Last Updated: Feb 2, 2026

Spin Saturation Transfer Difference NMR SSTD NMR: A New Tool to Obtain Kinetic Parameters of Chemical Exchange Processes
11:44

Spin Saturation Transfer Difference NMR SSTD NMR: A New Tool to Obtain Kinetic Parameters of Chemical Exchange Processes

Published on: November 12, 2016

18.6K
Lipid Exchange Assay in Living Cells
08:59

Lipid Exchange Assay in Living Cells

Published on: March 21, 2025

1.1K
Detection of Viruses from Bioaerosols Using Anion Exchange Resin
06:10

Detection of Viruses from Bioaerosols Using Anion Exchange Resin

Published on: August 22, 2018

8.7K

Area of Science:

  • Quantum Computing
  • Solid-State Physics
  • Quantum Information Science

Background:

  • Charge noise and nuclear spin dephasing are primary limitations in quantum dot-based qubits.
  • Existing quantum dot qubits struggle with decoherence, hindering scalability and reliability.

Purpose of the Study:

  • To propose a novel quadrupolar exchange-only spin qubit architecture.
  • To enhance qubit robustness against dominant decoherence mechanisms in quantum dots.

Main Methods:

  • Utilizing four electrons trapped in three quantum dots.
  • Operating the qubit in a decoherence-free subspace to suppress nuclear spin dephasing.
  • Employing an extended charge noise sweet spot for first-order insensitivity to electrical fluctuations.

Main Results:

  • The proposed qubit demonstrates high robustness against both charge noise and nuclear spin dephasing.
  • The qubit operates within a decoherence-free subspace, mitigating nuclear spin effects.
  • The qubit exhibits first-order insensitivity to electrical fluctuations at an extended sweet spot.
  • Electrically controllable qubit energy splitting up to several GHz is achieved via on-site exchange.

Conclusions:

  • The quadrupolar exchange-only spin qubit offers a promising pathway for building more stable and scalable quantum computers.
  • This design addresses key decoherence challenges in quantum dot systems.
  • Compatibility with conventional microwave cavities facilitates practical implementation.