Efficient single photon source based on μ-fibre-coupled tunable microcavity
Abstract
Efficient and fast on-demand single photon sources have been sought after as critical components of quantum information science. We report an efficient and tunable single photon source based on an InAs quantum dot (QD) embedded in a photonic crystal cavity coupled with a highly curved μ-fibre. Exploiting evanescent coupling between the μ-fibre and the cavity, a high collection efficiency of 23% and Purcell-enhanced spontaneous emissions are observed. In our scheme, the spectral position of a resonance can be tuned by as much as 1.5 nm by adjusting the contact position of the μ-fibre, which increases the spectral coupling probability between the QD and the cavity mode. Taking advantage of the high photon count rate and the tunability, the collection efficiencies and the decay rates are systematically investigated as a function of the QD-cavity detuning.
Citation
Lee , C-M , Lim , H-J , Schneider , C , Maier , S , Höfling , S , Kamp , M & Lee , Y-H 2015 , ' Efficient single photon source based on μ-fibre-coupled tunable microcavity ' , Scientific Reports , vol. 5 , 14309 . https://doi.org/10.1038/srep14309
Publication
Scientific Reports
Status
Peer reviewed
ISSN
2045-2322Type
Journal article
Rights
Copyright 2015 the Authors. This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
Description
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIP) (20070093863, 2014M3C1A3052537).Collections
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