Deterministic coupling of a single nitrogen vacancy center to a photonic crystal cavity

TL;DR

This paper introduces a precise method called Scanning Cavity Microscope for deterministic coupling of photonic crystal cavities to single quantum emitters, demonstrated with nitrogen vacancy centers in diamond.

Contribution

The paper presents a novel in-situ scanning technique for nanoscale positioning of photonic cavities over single emitters, enabling deterministic coupling.

Findings

Successful coupling of a photonic crystal cavity to a single NV center.

Nanoscale resolution positioning demonstrated.

Potential for quantum information applications.

Abstract

We describe and experimentally demonstrate a technique for deterministic coupling between a photonic crystal (PC) nanocavity and single emitters. The technique is based on in-situ scanning of a PC cavity over a sample and allows the positioning of the cavity over a desired emitter with nanoscale resolution. The power of the technique, which we term a Scanning Cavity Microscope (SCM), is demonstrated by coupling the PC nanocavity to a single nitrogen vacancy (NV) center in diamond, an emitter system that provides optically accessible electron and nuclear spin qubits.