In this work, we demonstrate a triggered single-photon source operating at the telecom C-band with photon extraction efficiency exceeding any reported values in this range. The non-classical light emission with low probability of the multiphoton events is realized with single InAs quantum dots (QDs) grown by molecular beam epitaxy and embedded directly in an InP matrix. Low QD spatial density on the order of 5 × 108 cm−2 to ∼2 × 109 cm−2 and symmetric shape of these nanostructures together with spectral range of emission make them relevant for quantum communication applications. The engineering of extraction efficiency is realized by combining a bottom distributed Bragg reflector consisting of 25 pairs of InP/In0.53Ga0.37Al0.1 As layers and cylindrical photonic confinement structures. Realization of such a technologically non-demanding approach even in a non-deterministic fashion results in photon extraction efficiency of (13.3 ± 2) % into 0.4 numerical aperture detection optics at approximately 1560 nm emission wavelength, i.e., close to the center of the telecom C-band.
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31 May 2021
Research Article|
June 01 2021
InP-based single-photon sources operating at telecom C-band with increased extraction efficiency
Special Collection:
Non-Classical Light Emitters and Single-Photon Detectors
A. Musiał
;
A. Musiał
a)
1
Department of Experimental Physics, Faculty of Fundamental Problems of Technology, Wrocław University of Science and Technology
, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
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M. Mikulicz;
M. Mikulicz
1
Department of Experimental Physics, Faculty of Fundamental Problems of Technology, Wrocław University of Science and Technology
, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
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P. Mrowiński
;
P. Mrowiński
1
Department of Experimental Physics, Faculty of Fundamental Problems of Technology, Wrocław University of Science and Technology
, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
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A. Zielińska;
A. Zielińska
1
Department of Experimental Physics, Faculty of Fundamental Problems of Technology, Wrocław University of Science and Technology
, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
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P. Sitarek
;
P. Sitarek
1
Department of Experimental Physics, Faculty of Fundamental Problems of Technology, Wrocław University of Science and Technology
, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
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P. Wyborski
;
P. Wyborski
1
Department of Experimental Physics, Faculty of Fundamental Problems of Technology, Wrocław University of Science and Technology
, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
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M. Kuniej;
M. Kuniej
1
Department of Experimental Physics, Faculty of Fundamental Problems of Technology, Wrocław University of Science and Technology
, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
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J. P. Reithmaier
;
J. P. Reithmaier
2
Institute of Nanostructure Technologies and Analytics (INA), Center for Interdisciplinary Nanostructure Science and Technology (CINSaT), University of Kassel
, Heinrich-Plett-Str. 40, 34132 Kassel, Germany
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G. Sęk
;
G. Sęk
1
Department of Experimental Physics, Faculty of Fundamental Problems of Technology, Wrocław University of Science and Technology
, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
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M. Benyoucef
M. Benyoucef
a)
2
Institute of Nanostructure Technologies and Analytics (INA), Center for Interdisciplinary Nanostructure Science and Technology (CINSaT), University of Kassel
, Heinrich-Plett-Str. 40, 34132 Kassel, Germany
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Note: This paper is part of the APL Special Collection on Non-Classical Light Emitters and Single-Photon Detectors.
Appl. Phys. Lett. 118, 221101 (2021)
Article history
Received:
January 31 2021
Accepted:
May 16 2021
Citation
A. Musiał, M. Mikulicz, P. Mrowiński, A. Zielińska, P. Sitarek, P. Wyborski, M. Kuniej, J. P. Reithmaier, G. Sęk, M. Benyoucef; InP-based single-photon sources operating at telecom C-band with increased extraction efficiency. Appl. Phys. Lett. 31 May 2021; 118 (22): 221101. https://doi.org/10.1063/5.0045997
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