Heterodyne detection of radio-frequency electric fields using point defects in silicon carbide

@article{Wolfowicz2019HeterodyneDO,
  title={Heterodyne detection of radio-frequency electric fields using point defects in silicon carbide},
  author={Gary Wolfowicz and Christopher P. Anderson and Samuel J. Whiteley and David D. Awschalom},
  journal={Applied Physics Letters},
  year={2019}
}
Sensing electric fields with high sensitivity, high spatial resolution and at radio frequencies can be challenging to realize. Recently, point defects in silicon carbide have shown their ability to measure local electric fields by optical charge conversion of their charge state. Here we report the combination of heterodyne detection with charge-based electric field sensing, solving many of the previous limitations of this technique. Owing to the non-linear response of the charge conversion to… 

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