Broadband enhancement of spontaneous emission from nitrogen-vacancy centers in nanodiamonds by hyperbolic metamaterials

TL;DR

This paper demonstrates a broadband enhancement of emission from nitrogen-vacancy centers in nanodiamonds using hyperbolic metamaterials, advancing the development of efficient on-chip single-photon sources.

Contribution

It introduces a multilayer hyperbolic metamaterial to enhance emission from NV centers, enabling broadband and efficient single-photon source integration.

Findings

Broadband emission enhancement achieved

Hyperbolic metamaterials effectively increase emission rates

Potential for on-chip quantum photonic devices

Abstract

We experimentally demonstrate a broadband enhancement of emission from nitrogen vacancy centers in nanodiamonds. The enhancement is achieved by using a multilayer metamaterial with hyperbolic dispersion. The metamaterial is fabricated as a stack of alternating gold and alumina layers. Our approach paves the way towards the construction of efficient single-photon sources as planar on-chip devices.