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Related Concept Videos

Atomic Nuclei: Nuclear Spin State Overview01:03

Atomic Nuclei: Nuclear Spin State Overview

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 one, the...
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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 in...

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Related Experiment Video

Updated: Jun 6, 2026

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

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Published on: June 3, 2015

Surveying optically addressable spin qubits for quantum information and sensing technology.

Calysta A Tesiman1, Mark Oxborrow1, Max Attwood1

  • 1Department of Materials and London Centre for Nanotechnology, Imperial College London, London, UK.

Npj Quantum Materials
|June 5, 2026
PubMed
Summary

This review surveys optically addressable spin qubits for quantum computing. It benchmarks promising materials and identifies trends in qubit performance, crucial for developing scalable quantum technologies.

Keywords:
Materials scienceOptics and photonicsPhysics

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Last Updated: Jun 6, 2026

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Area of Science:

  • Quantum Information Science
  • Materials Science for Quantum Technologies

Background:

  • Quantum technologies promise enhanced speed, efficiency, and precision over classical systems.
  • Significant challenges exist in creating error-free, scalable quantum hardware for societal benefit.

Purpose of the Study:

  • To review and benchmark families of optically addressable spin qubits.
  • To identify promising qubit materials and trends for future quantum platforms.

Main Methods:

  • Survey of various optically addressable spin qubit families.
  • Benchmarking and comparative analysis of qubit performance metrics.
  • Identification of trends influencing qubit properties.

Main Results:

  • Identified and benchmarked promising optically addressable spin qubit materials.
  • Revealed trends correlating material synthesis, qubit concentration/distribution, and experimental conditions with qubit lifetimes.

Conclusions:

  • Optically addressable spin qubits are key components for quantum computing hardware.
  • Understanding material synthesis and qubit integration is critical for improving qubit performance and scalability.