edoc

Deterministic Enhancement of Coherent Photon Generation from a Nitrogen-Vacancy Center in Ultrapure Diamond

Riedel, Daniel and Sollner, Immo and Shields, Brendan J. and Starosielec, Sebastian and Appel, Patrick and Neu, Elke and Maletinsky, Patrick and Warburton, Richard J.. (2017) Deterministic Enhancement of Coherent Photon Generation from a Nitrogen-Vacancy Center in Ultrapure Diamond. Physical review X, 7 (3). 031040.

[img]
Preview
PDF - Published Version
860Kb

Official URL: http://edoc.unibas.ch/58238/

Downloads: Statistics Overview

Abstract

The nitrogen-vacancy (NV) center in diamond has an optically addressable, highly coherent spin. However, a NV center even in high-quality single-crystalline material is a very poor source of single photons: Extraction out of the high-index diamond is inefficient, the emission of coherent photons represents just a few percent of the total emission, and the decay time is large. In principle, all three problems can be addressed with a resonant microcavity. In practice, it has proved difficult to implement this concept: Photonic engineering hinges on nanofabrication, yet it is notoriously difficult to process diamond without degrading the NV centers. Here, we present a microcavity scheme that uses minimally processed diamond, thereby preserving the high quality of the starting material and a tunable microcavity platform. We demonstrate a clear change in the lifetime for multiple individual NV centers on tuning both the cavity frequency and antinode position, a Purcell effect. The overall Purcell factor F P = 2.0 translates to a Purcell factor for the zero phonon line (ZPL) of F ZPL P ∼ 30 and an increase in the ZPL emission probability from about 3% to 46%. By making a step change in the NV’s optical properties in a deterministic way, these results pave the way for much enhanced spin-photon and spin-spin entanglement rates.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Experimental Physics (Warburton)
05 Faculty of Science > Departement Physik > Physik > Georg H. Endress-Stiftungsprofessur für Experimentalphysik (Maletinsky)
UniBasel Contributors:Warburton, Richard J and Maletinsky, Patrick M. and Riedel, Daniel and Söllner, Immo and Shields, Brendan and Starosielec, Sebastian and Appel, Patrick and Neu, Elke
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:APS American Physical Society
ISSN:2160-3308
Note:Publication type according to Uni Basel Research Database: Journal article
Language:English
Identification Number:
Last Modified:10 Jan 2018 11:57
Deposited On:10 Jan 2018 11:57

Repository Staff Only: item control page