Spin Readout Techniques of the Nitrogen-Vacancy Center in Diamond

TL;DR

This paper reviews various techniques to enhance the spin state readout of nitrogen-vacancy centers in diamond, aiming to achieve single-shot, room-temperature measurements crucial for quantum information applications.

Contribution

It provides a comprehensive overview of current methods and discusses future research directions for improving NV center spin readout performance.

Findings

Current methods require averaging over many cycles

Potential for single-shot readout at room temperature

Identification of promising future research avenues

Abstract

The diamond nitrogen-vacancy (NV) center is a leading platform for quantum information science due to its optical addressability and room-temperature spin coherence. However, measurements of the NV center's spin state typically require averaging over many cycles to overcome noise. Here, we review several approaches to improve the readout performance and highlight future avenues of research that could enable single-shot electron-spin readout at room temperature.