Bright room temperature single photon source at telecom range in cubic silicon carbide

Junfeng Wang,Weibo Gao,Abdullah Rasmita,Hans Jürgen Von Bardeleben,Yu Zhou,Ziyu Wang,Jianqun Yang,Xingji Li

doi:10.1038/s41467-018-06605-3

Abstract

Single-photon emitters (SPEs) play an important role in a number of quantum information tasks such as quantum key distributions. In these protocols, telecom wavelength photons are desired due to their low transmission loss in optical fibers. In this paper, we present a study of bright single-photon emitters in cubic silicon carbide (3C-SiC) emitting in the telecom range. We find that these emitters are photostable and bright at room temperature with a count rate of ~ MHz. Altogether with the fact that SiC is a growth and fabrication-friendly material, our result may be relevant for future applications in quantum communication technology.

Highlights

Single-photon emitters (SPEs) play an important role in a number of quantum information tasks such as quantum key distributions
The difficulty of quantum key distribution (QKD) using true SPE lies on the fact that it is challenging to find a bright, room temperature (RT) SPE working in the telecom range, which is required to minimize the transmission loss in optical fibers
We present a type of bright ( ~ MHz) single emitters in 3C-SiC, which work at room temperature and emit in the telecom range

Summary

Introduction

Single-photon emitters (SPEs) play an important role in a number of quantum information tasks such as quantum key distributions In these protocols, telecom wavelength photons are desired due to their low transmission loss in optical fibers. We present a study of bright single-photon emitters in cubic silicon carbide (3C-SiC) emitting in the telecom range We find that these emitters are photostable and bright at room temperature with a count rate of ~ MHz. Altogether with the fact that SiC is a growth and fabrication-friendly material, our result may be relevant for future applications in quantum communication technology. We present a type of bright ( ~ MHz) single emitters in 3C-SiC, which work at room temperature and emit in the telecom range. All these properties are highly desired in the QKD protocols with polarization coding scheme

Methods

Results

Conclusion