A fiber-pigtailed quantum dot device generating indistinguishable photons at GHz clock-rates
Solid-state quantum light sources based on semiconductor quantum dots (QDs) are increasingly employed in photonic quantum information applications. Especially when moving towards real-world scenarios outside shielded lab environments, the efficient and robust coupling of nanophotonic devices to sing...
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| Format: | Article |
| Language: | English |
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De Gruyter
2025-01-01
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| Series: | Nanophotonics |
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| Online Access: | https://doi.org/10.1515/nanoph-2024-0519 |
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| author | Rickert Lucas Żołnacz Kinga Vajner Daniel A. von Helversen Martin Rodt Sven Reitzenstein Stephan Liu Hanqing Li Shulun Ni Haiqiao Wyborski Paweł Sęk Grzegorz Musiał Anna Niu Zhichuan Heindel Tobias |
| author_facet | Rickert Lucas Żołnacz Kinga Vajner Daniel A. von Helversen Martin Rodt Sven Reitzenstein Stephan Liu Hanqing Li Shulun Ni Haiqiao Wyborski Paweł Sęk Grzegorz Musiał Anna Niu Zhichuan Heindel Tobias |
| author_sort | Rickert Lucas |
| collection | DOAJ |
| description | Solid-state quantum light sources based on semiconductor quantum dots (QDs) are increasingly employed in photonic quantum information applications. Especially when moving towards real-world scenarios outside shielded lab environments, the efficient and robust coupling of nanophotonic devices to single-mode optical fibers offers substantial advantage by enabling “plug-and-play” operation. In this work we present a fiber-pigtailed cavity-enhanced source of flying qubits emitting single indistinguishable photons at clock-rates exceeding 1 GHz. This is achieved by employing a fully deterministic technique for fiber-pigtailing optimized QD-devices based on hybrid circular Bragg grating (hCBG) micro-cavities. The fabricated fiber-pigtailed hCBGs feature emission lifetimes of <80
${< } 80$
ps, corresponding to a Purcell factor of ∼9, a suppression of multi-photon emission events with g
(2)(0) < 1 %, a photon-indistinguishability >80
${ >} 80$
% and a measured single-photon coupling efficiency of 53 % in a high numerical aperture single-mode fiber, corresponding to 1.2 Megaclicks per second at the single-photon detectors under 80 MHz excitation clock-rates. Furthermore, we show that high multi-photon suppression and indistinguishability prevail for excitation clock-rates exceeding 1 GHz. Our results show that Purcell-enhanced fiber-pigtailed quantum light sources based on hCBG cavities are a prime candidate for applications of quantum information science. |
| format | Article |
| id | doaj-art-b19af36ba2b94dc3b3b73aa32d96661d |
| institution | Kabale University |
| issn | 2192-8614 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Nanophotonics |
| spelling | doaj-art-b19af36ba2b94dc3b3b73aa32d96661d2025-08-20T03:31:20ZengDe GruyterNanophotonics2192-86142025-01-0114111795180810.1515/nanoph-2024-0519A fiber-pigtailed quantum dot device generating indistinguishable photons at GHz clock-ratesRickert Lucas0Żołnacz Kinga1Vajner Daniel A.2von Helversen Martin3Rodt Sven4Reitzenstein Stephan5Liu Hanqing6Li Shulun7Ni Haiqiao8Wyborski Paweł9Sęk Grzegorz10Musiał Anna11Niu Zhichuan12Heindel Tobias13Institute of Solid State Physics, Technical University Berlin, Hardenbergstraße 36, 10623Berlin, GermanyDepartment of Optics and Photonics, Wroclaw University of Science and Technology, Wybrzeże Stanisława Wyspiańskiego 27, 50-370Wroclaw, PolandInstitute of Solid State Physics, Technical University Berlin, Hardenbergstraße 36, 10623Berlin, GermanyInstitute of Solid State Physics, Technical University Berlin, Hardenbergstraße 36, 10623Berlin, GermanyInstitute of Solid State Physics, Technical University Berlin, Hardenbergstraße 36, 10623Berlin, GermanyInstitute of Solid State Physics, Technical University Berlin, Hardenbergstraße 36, 10623Berlin, GermanyKey Laboratory of Optoelectronic Materials and Devices, Institute of Semiconductors, Chinese Academy of Sciences, Beijing100083, ChinaKey Laboratory of Optoelectronic Materials and Devices, Institute of Semiconductors, Chinese Academy of Sciences, Beijing100083, ChinaKey Laboratory of Optoelectronic Materials and Devices, Institute of Semiconductors, Chinese Academy of Sciences, Beijing100083, ChinaDepartment of Experimental Physics, Wroclaw University of Science and Technology, Wybrzeże Stanisława Wyspiańskiego 27, 50-370Wroclaw, PolandDepartment of Experimental Physics, Wroclaw University of Science and Technology, Wybrzeże Stanisława Wyspiańskiego 27, 50-370Wroclaw, PolandDepartment of Experimental Physics, Wroclaw University of Science and Technology, Wybrzeże Stanisława Wyspiańskiego 27, 50-370Wroclaw, PolandKey Laboratory of Optoelectronic Materials and Devices, Institute of Semiconductors, Chinese Academy of Sciences, Beijing100083, ChinaInstitute of Solid State Physics, Technical University Berlin, Hardenbergstraße 36, 10623Berlin, GermanySolid-state quantum light sources based on semiconductor quantum dots (QDs) are increasingly employed in photonic quantum information applications. Especially when moving towards real-world scenarios outside shielded lab environments, the efficient and robust coupling of nanophotonic devices to single-mode optical fibers offers substantial advantage by enabling “plug-and-play” operation. In this work we present a fiber-pigtailed cavity-enhanced source of flying qubits emitting single indistinguishable photons at clock-rates exceeding 1 GHz. This is achieved by employing a fully deterministic technique for fiber-pigtailing optimized QD-devices based on hybrid circular Bragg grating (hCBG) micro-cavities. The fabricated fiber-pigtailed hCBGs feature emission lifetimes of <80 ${< } 80$ ps, corresponding to a Purcell factor of ∼9, a suppression of multi-photon emission events with g (2)(0) < 1 %, a photon-indistinguishability >80 ${ >} 80$ % and a measured single-photon coupling efficiency of 53 % in a high numerical aperture single-mode fiber, corresponding to 1.2 Megaclicks per second at the single-photon detectors under 80 MHz excitation clock-rates. Furthermore, we show that high multi-photon suppression and indistinguishability prevail for excitation clock-rates exceeding 1 GHz. Our results show that Purcell-enhanced fiber-pigtailed quantum light sources based on hCBG cavities are a prime candidate for applications of quantum information science.https://doi.org/10.1515/nanoph-2024-0519quantum dot devicesfiber-couplingquantum light generationghz operation |
| spellingShingle | Rickert Lucas Żołnacz Kinga Vajner Daniel A. von Helversen Martin Rodt Sven Reitzenstein Stephan Liu Hanqing Li Shulun Ni Haiqiao Wyborski Paweł Sęk Grzegorz Musiał Anna Niu Zhichuan Heindel Tobias A fiber-pigtailed quantum dot device generating indistinguishable photons at GHz clock-rates Nanophotonics quantum dot devices fiber-coupling quantum light generation ghz operation |
| title | A fiber-pigtailed quantum dot device generating indistinguishable photons at GHz clock-rates |
| title_full | A fiber-pigtailed quantum dot device generating indistinguishable photons at GHz clock-rates |
| title_fullStr | A fiber-pigtailed quantum dot device generating indistinguishable photons at GHz clock-rates |
| title_full_unstemmed | A fiber-pigtailed quantum dot device generating indistinguishable photons at GHz clock-rates |
| title_short | A fiber-pigtailed quantum dot device generating indistinguishable photons at GHz clock-rates |
| title_sort | fiber pigtailed quantum dot device generating indistinguishable photons at ghz clock rates |
| topic | quantum dot devices fiber-coupling quantum light generation ghz operation |
| url | https://doi.org/10.1515/nanoph-2024-0519 |
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