Modelling Rabi oscillations for widefield radiofrequency imaging in nitrogen-vacancy centers in diamond

TL;DR

This paper develops a seven-level model to simulate and understand Rabi oscillations in nitrogen-vacancy centers in diamond, aligning simulations with experimental widefield imaging results and explaining observed asymmetries.

Contribution

The paper introduces a detailed seven-level model for NV center dynamics that accurately simulates widefield Rabi oscillations and explains asymmetries in experimental data.

Findings

Good agreement between simulation and experiment

Model explains asymmetry in Rabi oscillations

Reveals incomplete repolarization effects

Abstract

In this paper we study the dynamics of an ensemble of nitrogen-vacancy centers in diamond when its photoluminescence is detected by means of a widefield imaging system. We develop a seven-level model and use it to simulate the widefield detection of nitrogen-vacancy centers Rabi oscillations. The simulation results are compared with experimental measurements showing a good agreement. In particular, we use the model to explain the asymmetric shape of the detected Rabi oscillations due to an incomplete repolarization of the nitrogen-vacancy center during the pulse sequence implemented for the detection of Rabi oscillations.