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March 10, 2026Advanced Optical Materials1 citationsOpen Access

Quantum Electrometry of Non‐Volatile Space Charges in Diamond

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RGR. M. GoldblattNDNikolai DontschukDMDaniel J. McCloskey

Key Points

  • This research aims to investigate how stable space charge distributions form in diamonds and their implications for electrometry.
  • Utilized electrometry techniques on quantum defects within diamond materials.
  • Applied optical illumination and an electric field to induce and observe space charge behaviors.
  • Measured spatial configurations and distributions of trapped photogenerated charges.
  • Observed stable, micron-scale space charge distributions developing under optical illumination.
  • Identified that space charges screen applied electric fields over distances of tens of microns.
  • Determined space charge fields are primarily from dispersed nitrogen charge configurations.

Abstract

ABSTRACT We use electrometry of quantum defects embedded within a diamond to observe stable, micron‐scale space charge distributions formed from trapped photogenerated charges. These space charges grow under optical illumination in the presence of an applied electric field, eventually screening the applied electric field entirely over a spatial extent of tens of microns due to charge carrier drift and capture. Our measurements suggest that these space charge fields originate from widely‐dispersed spatial configurations of nitrogen charges. Our results have important consequences for electrometry and photoelectric detection using qubits in wide‐bandgap semiconductors.

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Cite This Study

Goldblatt et al. (2026) studied this question.

synapsesocial.com/papers/69af95c070916d39fea4da21https://doi.org/10.1002/adom.202600008
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