{"id":"https://openalex.org/W4402126229","doi":"https://doi.org/10.1109/icton62926.2024.10647890","title":"Er-doped rare earth oxides for optical quantum memory on Si substrate","display_name":"Er-doped rare earth oxides for optical quantum memory on Si substrate","publication_year":2024,"publication_date":"2024-07-14","ids":{"openalex":"https://openalex.org/W4402126229","doi":"https://doi.org/10.1109/icton62926.2024.10647890"},"language":"en","primary_location":{"id":"doi:10.1109/icton62926.2024.10647890","is_oa":false,"landing_page_url":"http://dx.doi.org/10.1109/icton62926.2024.10647890","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2024 24th International Conference on Transparent Optical Networks (ICTON)","raw_type":"proceedings-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5102946529","display_name":"Tomohiro Inaba","orcid":"https://orcid.org/0000-0003-3558-3958"},"institutions":[{"id":"https://openalex.org/I4210105847","display_name":"NTT Basic Research Laboratories","ror":"https://ror.org/01m2pas06","country_code":"JP","type":"facility","lineage":["https://openalex.org/I4210105847"]}],"countries":["JP"],"is_corresponding":true,"raw_author_name":"Tomohiro Inaba","raw_affiliation_strings":["NTT Basic Research Labs NTT Corporation Morinosato-wakamiya,Atsugi,Kanagawa,Japan,243-0198"],"affiliations":[{"raw_affiliation_string":"NTT Basic Research Labs NTT Corporation Morinosato-wakamiya,Atsugi,Kanagawa,Japan,243-0198","institution_ids":["https://openalex.org/I4210105847"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100742196","display_name":"Xuejun Xu","orcid":"https://orcid.org/0009-0008-2640-7331"},"institutions":[{"id":"https://openalex.org/I4210105847","display_name":"NTT Basic Research Laboratories","ror":"https://ror.org/01m2pas06","country_code":"JP","type":"facility","lineage":["https://openalex.org/I4210105847"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Xuejun Xu","raw_affiliation_strings":["NTT Basic Research Labs NTT Corporation Morinosato-wakamiya,Atsugi,Kanagawa,Japan,243-0198"],"affiliations":[{"raw_affiliation_string":"NTT Basic Research Labs NTT Corporation Morinosato-wakamiya,Atsugi,Kanagawa,Japan,243-0198","institution_ids":["https://openalex.org/I4210105847"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5086764479","display_name":"Yuki K. Wakabayashi","orcid":"https://orcid.org/0000-0002-5057-2440"},"institutions":[{"id":"https://openalex.org/I4210105847","display_name":"NTT Basic Research Laboratories","ror":"https://ror.org/01m2pas06","country_code":"JP","type":"facility","lineage":["https://openalex.org/I4210105847"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Yuki Wakabayashi","raw_affiliation_strings":["NTT Basic Research Labs NTT Corporation Morinosato-wakamiya,Atsugi,Kanagawa,Japan,243-0198"],"affiliations":[{"raw_affiliation_string":"NTT Basic Research Labs NTT Corporation Morinosato-wakamiya,Atsugi,Kanagawa,Japan,243-0198","institution_ids":["https://openalex.org/I4210105847"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5005813383","display_name":"Takuma Otsuka","orcid":"https://orcid.org/0000-0001-7585-8202"},"institutions":[{"id":"https://openalex.org/I2251713219","display_name":"NTT (Japan)","ror":"https://ror.org/00berct97","country_code":"JP","type":"company","lineage":["https://openalex.org/I2251713219"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Takuma Otsuka","raw_affiliation_strings":["NTT Communication Science Labs NTT Corporation, Seika-cho,Kyoto,Japan,619-0237"],"affiliations":[{"raw_affiliation_string":"NTT Communication Science Labs NTT Corporation, Seika-cho,Kyoto,Japan,619-0237","institution_ids":["https://openalex.org/I2251713219"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5056366003","display_name":"Takehiko Tawara","orcid":"https://orcid.org/0000-0002-4000-1134"},"institutions":[{"id":"https://openalex.org/I104946051","display_name":"Nihon University","ror":"https://ror.org/05jk51a88","country_code":"JP","type":"education","lineage":["https://openalex.org/I104946051"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Takehiko Tawara","raw_affiliation_strings":["Nihon University, Koriyama,College of Engineering,Fukushima,Japan,963-8642"],"affiliations":[{"raw_affiliation_string":"Nihon University, Koriyama,College of Engineering,Fukushima,Japan,963-8642","institution_ids":["https://openalex.org/I104946051"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5090256577","display_name":"Hiroo Omi","orcid":null},"institutions":[{"id":"https://openalex.org/I4210097831","display_name":"Yamato University","ror":"https://ror.org/00wwj8r66","country_code":"JP","type":"education","lineage":["https://openalex.org/I4210097831"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Hiroo Omi","raw_affiliation_strings":["Yamato University, Suita,Faculty of Science and Engineering,Osaka,Japan,564-0082"],"affiliations":[{"raw_affiliation_string":"Yamato University, Suita,Faculty of Science and Engineering,Osaka,Japan,564-0082","institution_ids":["https://openalex.org/I4210097831"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5043496460","display_name":"Hideki Yamamoto","orcid":"https://orcid.org/0000-0002-1701-7090"},"institutions":[{"id":"https://openalex.org/I4210105847","display_name":"NTT Basic Research Laboratories","ror":"https://ror.org/01m2pas06","country_code":"JP","type":"facility","lineage":["https://openalex.org/I4210105847"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Hideki Yamamoto","raw_affiliation_strings":["NTT Basic Research Labs NTT Corporation Morinosato-wakamiya,Atsugi,Kanagawa,Japan,243-0198"],"affiliations":[{"raw_affiliation_string":"NTT Basic Research Labs NTT Corporation Morinosato-wakamiya,Atsugi,Kanagawa,Japan,243-0198","institution_ids":["https://openalex.org/I4210105847"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5112308594","display_name":"Katsuya Oguri","orcid":null},"institutions":[{"id":"https://openalex.org/I4210105847","display_name":"NTT Basic Research Laboratories","ror":"https://ror.org/01m2pas06","country_code":"JP","type":"facility","lineage":["https://openalex.org/I4210105847"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Katsuya Oguri","raw_affiliation_strings":["NTT Basic Research Labs NTT Corporation Morinosato-wakamiya,Atsugi,Kanagawa,Japan,243-0198"],"affiliations":[{"raw_affiliation_string":"NTT Basic Research Labs NTT Corporation Morinosato-wakamiya,Atsugi,Kanagawa,Japan,243-0198","institution_ids":["https://openalex.org/I4210105847"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5003745621","display_name":"Haruki Sanada","orcid":"https://orcid.org/0009-0000-8228-3689"},"institutions":[{"id":"https://openalex.org/I4210105847","display_name":"NTT Basic Research Laboratories","ror":"https://ror.org/01m2pas06","country_code":"JP","type":"facility","lineage":["https://openalex.org/I4210105847"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Haruki Sanada","raw_affiliation_strings":["NTT Basic Research Labs NTT Corporation Morinosato-wakamiya,Atsugi,Kanagawa,Japan,243-0198"],"affiliations":[{"raw_affiliation_string":"NTT Basic Research Labs NTT Corporation Morinosato-wakamiya,Atsugi,Kanagawa,Japan,243-0198","institution_ids":["https://openalex.org/I4210105847"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":9,"corresponding_author_ids":["https://openalex.org/A5102946529"],"corresponding_institution_ids":["https://openalex.org/I4210105847"],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.11864079,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":"1","last_page":"4"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10299","display_name":"Photonic and Optical Devices","score":0.9995999932289124,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10299","display_name":"Photonic and Optical Devices","score":0.9995999932289124,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11414","display_name":"Quantum optics and atomic interactions","score":0.9994999766349792,"subfield":{"id":"https://openalex.org/subfields/3107","display_name":"Atomic and Molecular Physics, and Optics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10022","display_name":"Semiconductor Quantum Structures and Devices","score":0.9987000226974487,"subfield":{"id":"https://openalex.org/subfields/3107","display_name":"Atomic and Molecular Physics, and Optics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/rare-earth","display_name":"Rare earth","score":0.7645678520202637},{"id":"https://openalex.org/keywords/doping","display_name":"Doping","score":0.7150187492370605},{"id":"https://openalex.org/keywords/materials-science","display_name":"Materials science","score":0.6255205273628235},{"id":"https://openalex.org/keywords/substrate","display_name":"Substrate (aquarium)","score":0.5985246300697327},{"id":"https://openalex.org/keywords/optoelectronics","display_name":"Optoelectronics","score":0.5811289548873901},{"id":"https://openalex.org/keywords/quantum","display_name":"Quantum","score":0.44803380966186523},{"id":"https://openalex.org/keywords/nanotechnology","display_name":"Nanotechnology","score":0.3448951542377472},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.32027357816696167},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.19153225421905518},{"id":"https://openalex.org/keywords/metallurgy","display_name":"Metallurgy","score":0.16296809911727905},{"id":"https://openalex.org/keywords/geology","display_name":"Geology","score":0.1202917993068695},{"id":"https://openalex.org/keywords/quantum-mechanics","display_name":"Quantum mechanics","score":0.07387828826904297}],"concepts":[{"id":"https://openalex.org/C2983155866","wikidata":"https://www.wikidata.org/wiki/Q7294540","display_name":"Rare earth","level":2,"score":0.7645678520202637},{"id":"https://openalex.org/C57863236","wikidata":"https://www.wikidata.org/wiki/Q1130571","display_name":"Doping","level":2,"score":0.7150187492370605},{"id":"https://openalex.org/C192562407","wikidata":"https://www.wikidata.org/wiki/Q228736","display_name":"Materials science","level":0,"score":0.6255205273628235},{"id":"https://openalex.org/C2777289219","wikidata":"https://www.wikidata.org/wiki/Q7632154","display_name":"Substrate (aquarium)","level":2,"score":0.5985246300697327},{"id":"https://openalex.org/C49040817","wikidata":"https://www.wikidata.org/wiki/Q193091","display_name":"Optoelectronics","level":1,"score":0.5811289548873901},{"id":"https://openalex.org/C84114770","wikidata":"https://www.wikidata.org/wiki/Q46344","display_name":"Quantum","level":2,"score":0.44803380966186523},{"id":"https://openalex.org/C171250308","wikidata":"https://www.wikidata.org/wiki/Q11468","display_name":"Nanotechnology","level":1,"score":0.3448951542377472},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.32027357816696167},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.19153225421905518},{"id":"https://openalex.org/C191897082","wikidata":"https://www.wikidata.org/wiki/Q11467","display_name":"Metallurgy","level":1,"score":0.16296809911727905},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.1202917993068695},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.07387828826904297},{"id":"https://openalex.org/C111368507","wikidata":"https://www.wikidata.org/wiki/Q43518","display_name":"Oceanography","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/icton62926.2024.10647890","is_oa":false,"landing_page_url":"http://dx.doi.org/10.1109/icton62926.2024.10647890","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2024 24th International Conference on Transparent Optical Networks (ICTON)","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/13","display_name":"Climate action","score":0.4099999964237213}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":12,"referenced_works":["https://openalex.org/W1972394520","https://openalex.org/W2000884742","https://openalex.org/W2039191639","https://openalex.org/W2062823346","https://openalex.org/W2082297209","https://openalex.org/W2888040330","https://openalex.org/W2955175033","https://openalex.org/W2981313909","https://openalex.org/W3011886082","https://openalex.org/W3020812586","https://openalex.org/W3185003680","https://openalex.org/W4224875166"],"related_works":["https://openalex.org/W4387567844","https://openalex.org/W4386732692","https://openalex.org/W2585857004","https://openalex.org/W3010460558","https://openalex.org/W2934931107","https://openalex.org/W2084813834","https://openalex.org/W2387263840","https://openalex.org/W2373373724","https://openalex.org/W2392483645","https://openalex.org/W2589083692"],"abstract_inverted_index":{"Quantum":[0],"memory":[1,23],"is":[2,32,43,46,85],"a":[3,11,33,39,90,104,150],"key":[4],"device":[5],"for":[6,13,20],"quantum":[7,16,22],"repeaters":[8],"that":[9,146],"are":[10,51],"prerequisite":[12],"building":[14],"global":[15],"networks.":[17],"In":[18],"particular":[19],"on-chip":[21],"operating":[24],"at":[25],"the":[26,48,55,96,108,112,126,130,140,154],"telecommunication":[27],"wavelength,":[28],"Er-doped":[29],"$\\mathrm{CeO}_{2}\\left(\\mathrm{Er}:":[30],"\\mathrm{CeO}_{2}\\right)$":[31],"promising":[34],"material":[35,142],"platform,":[36],"in":[37,54,129],"which":[38],"long":[40],"coherence":[41],"time":[42],"expected.":[44],"This":[45],"because":[47],"Er":[49,155],"ions":[50],"dilutely":[52],"embedded":[53],"nuclear-spin-free":[56],"CeO<inf":[57,68,143],"xmlns:mml=\"http://www.w3.org/1998/Math/MathML\"":[58,69,144],"xmlns:xlink=\"http://www.w3.org/1999/xlink\">2</inf>":[59,70,145],"matrix":[60],"(crystal).":[61],"Although":[62],"we":[63,88],"have":[64],"prepared":[65],"high-quality":[66],"Er:":[67],"crystals":[71],"on":[72],"Si":[73],"substrates":[74],"by":[75],"molecular":[76],"beam":[77],"epitaxy,":[78],"further":[79],"improvement":[80,128],"of":[81,139],"their":[82],"optical":[83,113,131],"properties":[84,132],"desired.":[86],"Here,":[87],"introduced":[89],"post-growth":[91,117],"annealing":[92,98,118],"process":[93,119],"and":[94,110,125],"explored":[95],"optimum":[97],"conditions":[99],"using":[100],"Bayesian":[101],"optimization":[102],"with":[103],"view":[105],"to":[106,122,136,148],"increasing":[107],"intensity":[109],"narrowing":[111],"absorption":[114],"linewidth.":[115],"The":[116],"turned":[120],"out":[121],"be":[123,134],"effective,":[124],"resultant":[127],"can":[133],"attributed":[135],"improved":[137],"crystallinity":[138],"host":[141],"contributes":[147],"providing":[149],"uniform":[151],"environment":[152],"around":[153],"ions.":[156]},"counts_by_year":[],"updated_date":"2025-12-27T23:08:20.325037","created_date":"2025-10-10T00:00:00"}