# Monolayer-Based Single-Photon Source in a Liquid-Helium-Free Open Cavity Featuring 65% Brightness and Quantum Coherence https://mdr.nims.go.jp/datasets/b53a4425-f89a-4f7f-ae33-77e0e887d57a ## File - [drawer-et-al-2023-monolayer-based-single-photon-source-in-a-liquid-helium-free-open-cavity-featuring-65-brightness-and.pdf](https://mdr.nims.go.jp/filesets/c76aae30-f287-4218-89eb-1e238699dc03/download) ([Detail](https://mdr.nims.go.jp/filesets/c76aae30-f287-4218-89eb-1e238699dc03.md)) ## Id b53a4425-f89a-4f7f-ae33-77e0e887d57a ## Local identifier ## Visibility open_to_public ## State published ## Created at 2025-02-25T06:42:10.441260Z ## Updated at 2025-02-26T03:30:53.239603Z ## Published at 2025-02-26T03:30:53.320185Z ## Doi ## First published url https://doi.org/10.1021/acs.nanolett.3c02584 ## Date published 2023-09-27 ## Recorded date published 2023-9-27 ## Resource type journal_article ## Manuscript type vor ## Collection ## Title - title: Monolayer-Based Single-Photon Source in a Liquid-Helium-Free Open Cavity Featuring 65% Brightness and Quantum Coherence title_type: original lang: en ## Description - description: 'Solid-state single photon sources are central building blocks in quantum communication networks and on-chip quantum information processing. Atomically thin crystals and layered van-der-Waals materials emerged as possible candidates to emit non-classical states of light. However, the performance of monolayer-based single photon sources has so far been lacking behind state-of-the-art devices based on volume crystals. Here, we implement a single photon source based on an atomically thin sheet of WSe2 coupled to a spectrall tunable optical cavity. We harness the vibrational stability of our open cavity single photon source, which allows us to operate it in a liquid helium-free cryostat without further need for stabilization routines. Its performance is characterized by a high single photon purity with a g(2)(0) value as low as 4.7 ± 0.7 % and a record-high, directly measured first lens brightness of linearly polarized photons as large as 65 ± 4 % as a decisive step towards real-world quantum applications. Interestingly, the high performance of our devices allows us to observe genuine quantum interference phenomena in a Hong-Ou-Mandel experiment. Our results thus demonstrate that open cavities and two-dimensional materials constitute an excellent platform for ultra-bright quantum light sources: the unique properties of such two-dimensional materials and the versatility of open cavities open an inspiring avenue for novel quantum optoelectronic devices.' description_type: abstract lang: und ## Creator - name: Jens-Christian Drawer role: author - name: Victor Nikolaevich Mitryakhin role: author - name: Hangyong Shan role: author - name: Sven Stephan role: author - name: Moritz Gittinger role: author - name: Lukas Lackner role: author - name: Bo Han role: author - name: Gilbert Leibeling role: author - name: Falk Eilenberger role: author - name: Rounak Banerjee role: author - name: Sefaattin Tongay role: author - name: Kenji Watanabe role: author orcid: https://orcid.org/0000-0003-3701-8119 organization: National Institute for Materials Science ror: https://ror.org/026v1ze26 - name: Takashi Taniguchi role: author orcid: https://orcid.org/0000-0002-1467-3105 organization: National Institute for Materials Science ror: https://ror.org/026v1ze26 - name: Christoph Lienau role: author - name: Martin Silies role: author - name: Carlos Anton-Solanas role: author - name: Martin Esmann role: author - name: Christian Schneider role: author ## Contact agent ## Publisher organization: American Chemical Society (ACS) ## Managing organization ## Keyword - subject: Single-photon sources schema: not_defined - subject: atomically thin crystals schema: not_defined - subject: quantum information schema: not_defined ## Rights - identifier: https://creativecommons.org/licenses/by/4.0/ ## Other identifier(s) ## Data origin ## Embargo ## Journal - title: Nano Letters issn: '15306984' volume: '23' issue: '18' start_page: 8683 end_page: 8689 ## Conference ## Related item ## Funding - identifier: SMART funder_name: Volkswagen Foundation - identifier: 2020T1/IND19785 funder_name: Comunidad de Madrid - identifier: ULTRA-BRIGHT funder_name: Fundaci??n Ram??n Areces - identifier: PID2020-113445GB-I00 funder_name: Ministerio de Ciencia e Innovaci??n - identifier: INST 184/220-1 FUGG funder_name: Deutsche Forschungsgemeinschaft - identifier: SCHN1376 11.1 funder_name: Deutsche Forschungsgemeinschaft - identifier: SCHN1376 14.1 funder_name: Deutsche Forschungsgemeinschaft - identifier: DOE-SC0020653 funder_name: U.S. Department of Energy - identifier: '101017733' funder_name: European Commission - identifier: '679288' funder_name: European Commission - identifier: DMR 2111812 funder_name: National Science Foundation - identifier: DMR 2206987 funder_name: National Science Foundation - identifier: ECCS 2052527 funder_name: National Science Foundation - identifier: ECCS 2111812 funder_name: National Science Foundation - identifier: GOALI 2129412 funder_name: National Science Foundation - funder_name: Carl von Ossietzky Universit??t Oldenburg - funder_name: Bundesministerium f??r Bildung und Forschung - identifier: DyNano funder_name: Nieders??chsisches Ministerium f??r Wissenschaft und Kultur ## Instrument ## Instrument operator ## Instrument managing organization ## Measurement method ## Specimen ## Chemical composition ## Structure for specimen ## Structural feature for specimen ## Specific property for specimen ## Process for specimen treatment ## Computational method ## Energy level/transition state ## Software ## Custom property ## Fileset - id: c76aae30-f287-4218-89eb-1e238699dc03 filename: drawer-et-al-2023-monolayer-based-single-photon-source-in-a-liquid-helium-free-open-cavity-featuring-65-brightness-and.pdf content_type: application/pdf size: 3808890 md5: 3e0fc563ec1125f158773ce8a0e98dd9 ## Thumbnail fileset_id: c76aae30-f287-4218-89eb-1e238699dc03 filename: drawer-et-al-2023-monolayer-based-single-photon-source-in-a-liquid-helium-free-open-cavity-featuring-65-brightness-and.pdf