Microfiber-microcavity system for efficient single photon collection
Abstract
Single photon sources are key components for various quantum information processing. For practical quantum applications, bright single photon sources with efficient fiber-optical interfaces are highly required. Here, bright fiber-coupled single photon sources based on InAs quantum dots are demonstrated through the k-vector matching between a microfiber mode and a normal mode of the linear photonic crystal cavity. One of the modes of the linear photonic crystal cavity whose k-vector is similar to that of the microfiber mode is employed. From independent transmission measurement, the coupling efficiency directly into the fiber of 58% is obtained. When the quantum dot and cavity system is non-resonantly pumped with 80 MHz pulse train, a raw count rate of 1.81 MHz is obtained with g(2)(0) = 0.46. Resonant pump is expected to improve the rather high g(2)(0) value. Time-resolved photoluminescence is also measured to confirm the three-fold Purcell enhancement. This system provides a promising route for efficient direct fiber collections of single photons for quantum information processing.
Citation
Lee , C-M , Lim , H-J , Lee , M , Schneider , C , Maier , S , Höfling , S , Kamp , M & Yong-Hee , L 2016 , ' Microfiber-microcavity system for efficient single photon collection ' , Optics Express , vol. 24 , no. 20 , pp. 23471-23480 . https://doi.org/10.1364/OE.24.023471
Publication
Optics Express
Status
Peer reviewed
ISSN
1094-4087Type
Journal article
Description
Funded by the National Research Foundation of Korea (NRF) grant (MSIP) (NRF-2007-341-C00018, NRF-2014M3C1A3052567); State of Bavaria.Collections
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