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Nanoscale Vector Electric Field Imaging Using a Single Electron Spin.

Michael S J Barson¹, Lachlan M Oberg¹, Liam P McGuinness¹

¹Laser Physics Centre, Research School of Physics, Australian National University, Acton, Australian Capital Territory 2601, Australia.

|March 19, 2021

Summary

This summary is machine-generated.

Researchers achieved nanoscale electric field imaging of elementary charges using a shallow nitrogen-vacancy (NV) center in diamond. This breakthrough enables subelementary charge detection, advancing electric field sensing applications.

Keywords:

diamond electrometry imaging microscopy nitrogen-vacancy quantum

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Area of Science:

Quantum sensing
Nanoscale imaging
Diamond physics

Background:

Nitrogen-vacancy (NV) centers in diamond offer high-sensitivity electrometry.
Previous demonstrations were limited to macroscopic fields or internal charges.
Nanoscale electric field imaging of external charges remains a challenge.

Purpose of the Study:

To extend the capabilities of NV centers for nanoscale electric field imaging.
To image the electric field of an external charged tip with high resolution.
To demonstrate near single-charge sensitivity and subelementary charge detection.

Main Methods:

Utilizing a shallow NV center in diamond.
Measuring Stark shifts in NV spin-resonance due to AC electric fields.
Imaging the electric field of a charged atomic force microscope tip.

Main Results:

Achieved nanoscale resolution electric field imaging.
Demonstrated near single-charge sensitivity (η = 5.3 charges/√Hz).
Achieved subelementary charge detection (0.68e).

Conclusions:

Proof-of-concept for nanoscale electric field imaging using NV centers.
Significant advancement in sensitivity and detection limits.
Motivates further development of NV-based electric field sensing and imaging.