{"created":"2023-06-20T15:13:48.608223+00:00","id":10847,"links":{},"metadata":{"_buckets":{"deposit":"5f9ac22e-09ba-475c-9793-904852cb14f3"},"_deposit":{"created_by":3,"id":"10847","owners":[3],"pid":{"revision_id":0,"type":"depid","value":"10847"},"status":"published"},"_oai":{"id":"oai:ynu.repo.nii.ac.jp:00010847","sets":["495:496"]},"author_link":["38120","38156","38127","38122","38123","38124","38157","38126","38128"],"item_2_biblio_info_8":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2020-08-12","bibliographicIssueDateType":"Issued"},"bibliographicPageStart":"138 (2020)","bibliographicVolumeNumber":"3","bibliographic_titles":[{"bibliographic_title":"Communications Physics"}]}]},"item_2_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"Quantum computing and quantum communication, have been greatly developed in recent years and expected to contribute to quantum internet technologies, including cloud quantum computing and unconditionally secure communication. However, long-distance quantum communication is challenging mainly because of optical fiber losses; quantum repeaters are indispensable for fiber-based transmission because unknown quantum states cannot be amplified with certainty. In this study, we demonstrate a versatile entanglement source in the telecom band for fiber-based quantum internet, which has a narrow linewidth of sub-MHz range, entanglement fidelity of more than 95%, and Bell-state generation even with frequency multimode. Furthermore, after a total distribution length of 20-km in fiber, two-photon correlation is observed with an easily identifiable normalized correlation coefficient, despite the limited bandwidth of the wavelength converter. The presented implementation promises an efficient method for entanglement distribution that is compatible with quantum memory and frequency-multiplexed long-distance quantum communication applications.","subitem_description_type":"Abstract"}]},"item_2_publisher_35":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"Springer"}]},"item_2_relation_13":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_type":"isIdenticalTo","subitem_relation_type_id":{"subitem_relation_type_id_text":"info:doi/10.1038/s42005-020-00406-1","subitem_relation_type_select":"DOI"}}]},"item_2_relation_44":{"attribute_name":"関係URI","attribute_value_mlt":[{"subitem_relation_name":[{"subitem_relation_name_text":"https://doi.org/10.1038/s42005-020-00406-1"}],"subitem_relation_type_id":{"subitem_relation_type_id_text":"https://doi.org/10.1038/s42005-020-00406-1","subitem_relation_type_select":"DOI"}}]},"item_2_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"2399-3650","subitem_source_identifier_type":"ISSN"}]},"item_2_text_4":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"Yokohama National University"},{"subitem_text_value":"Yokohama National University"},{"subitem_text_value":"Yokohama National University"},{"subitem_text_value":"Yokohama National University"},{"subitem_text_value":"Kyoto University"},{"subitem_text_value":"Kanagawa University"},{"subitem_text_value":"Jinan Institute of Quantum Technology"},{"subitem_text_value":"Jinan Institute of Quantum Technology"},{"subitem_text_value":"Yokohama National University"}]},"item_2_version_type_18":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Kazuya, Niizeki"}],"nameIdentifiers":[{"nameIdentifier":"38120","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Daisuke, Yoshida"}],"nameIdentifiers":[{"nameIdentifier":"38156","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Ko, Ito"}],"nameIdentifiers":[{"nameIdentifier":"38122","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Ippei, Nakamura"}],"nameIdentifiers":[{"nameIdentifier":"38123","nameIdentifierScheme":"WEKO"},{"nameIdentifier":"10758949","nameIdentifierScheme":"e-Rad","nameIdentifierURI":"https://kaken.nii.ac.jp/ja/search/?qm=10758949"}]},{"creatorNames":[{"creatorName":"Nobuyuki, Takei"}],"nameIdentifiers":[{"nameIdentifier":"38124","nameIdentifierScheme":"WEKO"},{"nameIdentifier":"20531841","nameIdentifierScheme":"e-Rad","nameIdentifierURI":"https://kaken.nii.ac.jp/ja/search/?qm=20531841"}]},{"creatorNames":[{"creatorName":"Kotaro, Okamura"}],"nameIdentifiers":[{"nameIdentifier":"38157","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Ming-Yang, Zheng "}],"nameIdentifiers":[{"nameIdentifier":"38126","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Xiu-Ping , Xie"}],"nameIdentifiers":[{"nameIdentifier":"38128","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Tomoyuki, Horikiri"}],"nameIdentifiers":[{"nameIdentifier":"38127","nameIdentifierScheme":"WEKO"},{"nameIdentifier":"40530275","nameIdentifierScheme":"e-Rad","nameIdentifierURI":"https://kaken.nii.ac.jp/ja/search/?qm=40530275"}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2020-12-01"}],"displaytype":"detail","filename":"s42005-020-00406-1.pdf","filesize":[{"value":"961.4 kB"}],"format":"application/pdf","licensetype":"license_6","mimetype":"application/pdf","url":{"label":"s42005-020-00406-1.pdf","url":"https://ynu.repo.nii.ac.jp/record/10847/files/s42005-020-00406-1.pdf"},"version_id":"9ccfaa34-8647-4666-a803-81dc742aaa5d"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"Nonlinear optics","subitem_subject_scheme":"Other"},{"subitem_subject":"Quantum information","subitem_subject_scheme":"Other"},{"subitem_subject":"Quantum optics","subitem_subject_scheme":"Other"},{"subitem_subject":"Qubits","subitem_subject_scheme":"Other"},{"subitem_subject":"Single photons and quantum effects","subitem_subject_scheme":"Other"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"journal article","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"Two-photon comb with wavelength conversion and 20-km distribution for quantum communication","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Two-photon comb with wavelength conversion and 20-km distribution for quantum communication"}]},"item_type_id":"2","owner":"3","path":["496"],"pubdate":{"attribute_name":"公開日","attribute_value":"2020-12-01"},"publish_date":"2020-12-01","publish_status":"0","recid":"10847","relation_version_is_last":true,"title":["Two-photon comb with wavelength conversion and 20-km distribution for quantum communication"],"weko_creator_id":"3","weko_shared_id":3},"updated":"2023-06-20T18:18:09.295756+00:00"}