Microfiber-microcavity system for efficient single photon collection

Chang-Min Lee, Hee-Jin Lim, Mireu Lee, Christian Schneider, Sebastian Maier, Sven Höfling, Martin Kamp, Lee Yong-Hee

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


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.
Original languageEnglish
Pages (from-to)23471-23480
Number of pages10
JournalOptics Express
Issue number20
Early online date29 Sept 2016
Publication statusPublished - 3 Oct 2016


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