Enhanced Photoluminescence of Single-Photon Emitters in Nanodiamonds on a Gold Film

Author

Chi, Yingzhi ; Chen, Gengxu ; Jelezko, Fedor ; Wu, E. ; Zeng, Heping

Author_Institution

State Key Lab. of Precision Spectrosc., East China Normal Univ., Shanghai, China

Volume

23

Issue

6

fYear

2011

fDate

3/15/2011 12:00:00 AM

Firstpage

374

Lastpage

376

Abstract

Engineering the photo-emission characteristics of single-photon emitters is crucial for the growing field of quantum technologies. We show that the photoluminescence of a single nitrogen-vacancy color center in nanodiamond could be significantly enhanced when attached to a gold film of 50 nm with preserving photophysical properties as a single photon source. The nitrogen-vacancy center on the gold film showed a decreased excited-state lifetime and a modified saturation characteristic. The photoluminescence enhancement was due to the enhanced electric field by the surface plasmon and the energy transfer from the excited state of nitrogen-vacancy centers to the surface plasmon.

Keywords

colour centres; diamond; nanostructured materials; photoemission; photoluminescence; surface plasmons; vacancies (crystal); Au; C; energy transfer; excited state; excited-state lifetime; gold film; nanodiamonds; nitrogen-vacancy color center; photoemission characteristicsphotoluminescence; photoemission characteristicsphotophysical properties; photoemission properties; size 50 nm; surface plasmon; Gold film; nanodiamond; nitrogen-vacancy (NV) color center; surface plasmon;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2011.2106488

Filename

5688285