Enhanced emission extraction and selective readout of NV centers with all-dielectric nanoantennas

TL;DR

This paper introduces all-dielectric nanoantennas to significantly improve the emission extraction and selective readout of NV centers, enabling more efficient quantum sensing and information processing.

Contribution

It presents a novel all-dielectric nanoantenna design that enhances emission rate, directivity, and beam steering for NV center readout.

Findings

Enhanced emission rate and extraction efficiency of NV centers.

High directivity and large Purcell factor achieved.

Efficient far-field initialization and readout of multiple NV centers.

Abstract

We propose a novel approach to facilitate a readout processes of isolated negatively charged nitrogen-vacancy (NV) centers based on the concept of all-dielectric nanoantennas. We reveal that all-dielectric nanoantenna can significantly enhance both the emission rate and emission extraction efficiency of a photoluminescence signal from a single NV center in a diamond nanoparticle placed on a dielectric substrate. We prove that the proposed approach provides high directivity, large Purcell factor, and efficient beam steering, thus allowing an efficient far-field initialization and readout of several NV centers separated by subwavelength distances.