Quantum Electrometer for Time-Resolved Material Science at the Atomic Lattice Scale

TL;DR

This paper introduces a quantum electrometer capable of detecting and analyzing individual charges at the atomic lattice scale in real-time, advancing material characterization and quantum technology development.

Contribution

The authors develop a 60 ns resolution electrometer using spin defect spectroscopy in diamond, enabling time-resolved charge detection at the lattice scale.

Findings

Distinguished charge traps at the atomic level in diamond.

Quantified the impact of charge traps on transport and noise.

Provided insights for material optimization in quantum technologies.

Abstract

The detection of individual charges plays a crucial role in fundamental material science and the advancement of classical and quantum high-performance technologies that operate with low noise. However, resolving charges at the lattice scale in a time-resolved manner has not been achieved so far. Here, we present the development of an electrometer with 60 ns acquisition steps, leveraging on the spectroscopy of an optically-active spin defect embedded in a solid-state material with a non-linear Stark response. By applying our approach to diamond, a widely used platform for quantum technology applications, we can distinguish the distinct charge traps at the lattice scale, quantify their impact on transport dynamics and noise generation, analyze relevant material properties, and develop strategies for material optimization.