Efficient single photon source based on μ-fibre-coupled tunable microcavity

C.-M. Lee; H.-J. Lim; C. Schneider; S. Maier; Sven Höfling; M. Kamp; Y.-H. Lee

doi:10.1038/srep14309

Efficient single photon source based on μ-fibre-coupled tunable microcavity

C.-M. Lee, H.-J. Lim, C. Schneider, S. Maier, Sven Höfling, M. Kamp, Y.-H. Lee

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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.

Original language	English
Article number	14309
Journal	Scientific Reports
Volume	5
DOIs	https://doi.org/10.1038/srep14309
Publication status	Published - 22 Sept 2015

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title = "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.",

author = "C.-M. Lee and H.-J. Lim and C. Schneider and S. Maier and Sven H{\"o}fling and M. Kamp and Y.-H. Lee",

note = "This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIP) (20070093863, 2014M3C1A3052537). ",

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AU - Lee, C.-M.

AU - Lim, H.-J.

AU - Schneider, C.

AU - Maier, S.

AU - Höfling, Sven

AU - Kamp, M.

AU - Lee, Y.-H.

N1 - This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIP) (20070093863, 2014M3C1A3052537).

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N2 - 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.

AB - 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.

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Efficient single photon source based on μ-fibre-coupled tunable microcavity

Abstract

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