{"id":"https://openalex.org/W7222296367","doi":"https://doi.org/10.48550/arxiv.2610.19933","title":"Photon Demultiplexing Using Spatial Routing","display_name":"Photon Demultiplexing Using Spatial Routing","publication_year":2026,"publication_date":"2026-10-14","ids":{"openalex":"https://openalex.org/W7222296367","doi":"https://doi.org/10.48550/arxiv.2610.19933"},"language":"en","primary_location":{"id":"pmh:oai:arXiv.org:2610.19933","doi":null,"is_oa":true,"landing_page_url":"https://arxiv.org/abs/2610.19933","pdf_url":"https://arxiv.org/pdf/2610.19933","source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":"2331-8422","issn":["2331-8422"],"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"text"},"volume":null,"type":"preprint","is_traditional":true,"indexed_in":["arxiv","datacite"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"https://arxiv.org/pdf/2610.19933","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5006502373","display_name":"Hashir Kuniyil","orcid":"https://orcid.org/0000-0003-0338-1278","observed_orcids":["https://orcid.org/0000-0003-0338-1278"]},"institutions":[{"id":"https://openalex.org/I4210144839","display_name":"Hamad bin Khalifa University","ror":"https://ror.org/03eyq4y97","country_code":"QA","type":"education","lineage":["https://openalex.org/I4210144839"]}],"countries":["QA"],"is_corresponding":false,"raw_author_name":"Kuniyil, Hashir","raw_affiliation_strings":["Qatar Center for Quantum Computing , College of Science and Engineering , Hamad Bin Khalifa University , Doha , Qatar"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Qatar Center for Quantum Computing , College of Science and Engineering , Hamad Bin Khalifa University , Doha , Qatar","institution_ids":["https://openalex.org/I4210144839"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5158834723","display_name":"Asad Ali","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I4210144839","display_name":"Hamad bin Khalifa University","ror":"https://ror.org/03eyq4y97","country_code":"QA","type":"education","lineage":["https://openalex.org/I4210144839"]}],"countries":["QA"],"is_corresponding":false,"raw_author_name":"Ali, Asad","raw_affiliation_strings":["Qatar Center for Quantum Computing , College of Science and Engineering , Hamad Bin Khalifa University , Doha , Qatar"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Qatar Center for Quantum Computing , College of Science and Engineering , Hamad Bin Khalifa University , Doha , Qatar","institution_ids":["https://openalex.org/I4210144839"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5002005849","display_name":"Saif M. Al-Kuwari","orcid":"https://orcid.org/0000-0002-4402-7710","observed_orcids":["https://orcid.org/0000-0002-4402-7710"]},"institutions":[{"id":"https://openalex.org/I4210144839","display_name":"Hamad bin Khalifa University","ror":"https://ror.org/03eyq4y97","country_code":"QA","type":"education","lineage":["https://openalex.org/I4210144839"]}],"countries":["QA"],"is_corresponding":false,"raw_author_name":"Al-Kuwari, Saif","raw_affiliation_strings":["Qatar Center for Quantum Computing , College of Science and Engineering , Hamad Bin Khalifa University , Doha , Qatar"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Qatar Center for Quantum Computing , College of Science and Engineering , Hamad Bin Khalifa University , Doha , Qatar","institution_ids":["https://openalex.org/I4210144839"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I4210144839"],"apc_list":null,"apc_paid":null,"fwci":null,"has_fulltext":true,"cited_by_count":0,"citation_normalized_percentile":null,"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10020","display_name":"Quantum Information and Cryptography","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"}},"topics":[{"id":"https://openalex.org/T10020","display_name":"Quantum Information and Cryptography","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/T11414","display_name":"Quantum optics and atomic interactions","score":9.999999747378752e-05,"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":0.0,"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/spontaneous-parametric-down-conversion","display_name":"spontaneous parametric down-conversion","score":0.8309999704360962},{"id":"https://openalex.org/keywords/multi-party-quantum-communication","display_name":"multi-party quantum communication","score":0.8849999904632568},{"id":"https://openalex.org/keywords/entangled-photon-pairs","display_name":"entangled photon pairs","score":0.5889999866485596},{"id":"https://openalex.org/keywords/random-coincidences","display_name":"accidental coincidences","score":0.6259999871253967},{"id":"https://openalex.org/keywords/channel-spacing","display_name":"channel spacing","score":0.36899998784065247}],"concepts":[{"id":"https://openalex.org/C19275194","wikidata":"https://www.wikidata.org/wiki/Q222903","display_name":"Multiplexing","level":2,"score":0.7128000259399414},{"id":"https://openalex.org/C74172769","wikidata":"https://www.wikidata.org/wiki/Q1446839","display_name":"Routing (electronic design automation)","level":2,"score":0.6675000190734863},{"id":"https://openalex.org/C117251300","wikidata":"https://www.wikidata.org/wiki/Q1849855","display_name":"Parametric statistics","level":2,"score":0.6290000081062317},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.582099974155426},{"id":"https://openalex.org/C159317903","wikidata":"https://www.wikidata.org/wiki/Q3198","display_name":"Photon","level":2,"score":0.5776000022888184},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.5569000244140625},{"id":"https://openalex.org/C24326235","wikidata":"https://www.wikidata.org/wiki/Q126095","display_name":"Electronic engineering","level":1,"score":0.4717999994754791},{"id":"https://openalex.org/C26517878","wikidata":"https://www.wikidata.org/wiki/Q228039","display_name":"Key (lock)","level":2,"score":0.45829999446868896},{"id":"https://openalex.org/C184720557","wikidata":"https://www.wikidata.org/wiki/Q7825049","display_name":"Topology (electrical circuits)","level":2,"score":0.436599999666214},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.4203000068664551},{"id":"https://openalex.org/C9652623","wikidata":"https://www.wikidata.org/wiki/Q190109","display_name":"Field (mathematics)","level":2,"score":0.3675999939441681},{"id":"https://openalex.org/C111335779","wikidata":"https://www.wikidata.org/wiki/Q3454686","display_name":"Reduction (mathematics)","level":2,"score":0.3549000024795532},{"id":"https://openalex.org/C4679612","wikidata":"https://www.wikidata.org/wiki/Q866298","display_name":"Aggregate (composite)","level":2,"score":0.34299999475479126},{"id":"https://openalex.org/C2776436953","wikidata":"https://www.wikidata.org/wiki/Q5163215","display_name":"Consistency (knowledge bases)","level":2,"score":0.32989999651908875},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.3199000060558319},{"id":"https://openalex.org/C84114770","wikidata":"https://www.wikidata.org/wiki/Q46344","display_name":"Quantum","level":2,"score":0.3100000023841858},{"id":"https://openalex.org/C187486625","wikidata":"https://www.wikidata.org/wiki/Q2122176","display_name":"Quantum channel","level":4,"score":0.2969000041484833},{"id":"https://openalex.org/C104434177","wikidata":"https://www.wikidata.org/wiki/Q215675","display_name":"Photon entanglement","level":4,"score":0.2953000068664551},{"id":"https://openalex.org/C80444323","wikidata":"https://www.wikidata.org/wiki/Q2878974","display_name":"Theoretical computer science","level":1,"score":0.28760001063346863},{"id":"https://openalex.org/C203103908","wikidata":"https://www.wikidata.org/wiki/Q3689728","display_name":"Spontaneous parametric down-conversion","level":4,"score":0.2824999988079071},{"id":"https://openalex.org/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","level":1,"score":0.27790001034736633},{"id":"https://openalex.org/C95466800","wikidata":"https://www.wikidata.org/wiki/Q1027298","display_name":"Quantum key distribution","level":3,"score":0.27239999175071716},{"id":"https://openalex.org/C2778755073","wikidata":"https://www.wikidata.org/wiki/Q10858537","display_name":"Scale (ratio)","level":2,"score":0.2718999981880188},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.262800008058548},{"id":"https://openalex.org/C186468114","wikidata":"https://www.wikidata.org/wiki/Q836478","display_name":"Quantum network","level":4,"score":0.2533000111579895},{"id":"https://openalex.org/C160724564","wikidata":"https://www.wikidata.org/wiki/Q1620670","display_name":"Wavelength-division multiplexing","level":3,"score":0.2515000104904175}],"mesh":[],"locations_count":2,"locations":[{"id":"pmh:oai:arXiv.org:2610.19933","doi":null,"is_oa":true,"landing_page_url":"https://arxiv.org/abs/2610.19933","pdf_url":"https://arxiv.org/pdf/2610.19933","source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":"2331-8422","issn":["2331-8422"],"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"text"},{"id":"doi:10.48550/arxiv.2610.19933","doi":"https://doi.org/10.48550/arxiv.2610.19933","is_oa":true,"landing_page_url":"https://doi.org/10.48550/arxiv.2610.19933","pdf_url":null,"source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":"2331-8422","issn":["2331-8422"],"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"Preprint"}],"best_oa_location":{"id":"pmh:oai:arXiv.org:2610.19933","doi":null,"is_oa":true,"landing_page_url":"https://arxiv.org/abs/2610.19933","pdf_url":"https://arxiv.org/pdf/2610.19933","source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":"2331-8422","issn":["2331-8422"],"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"text"},"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":true,"grobid_xml":true},"content_urls":{"pdf":"https://content.openalex.org/works/W7222296367.pdf","grobid_xml":"https://content.openalex.org/works/W7222296367.grobid-xml"},"referenced_works_count":4,"referenced_works":["https://openalex.org/W2237812887","https://openalex.org/W4414595552","https://openalex.org/W4415937792","https://openalex.org/W7203696927"],"related_works":["https://openalex.org/W6926526303","https://openalex.org/W3136718531","https://openalex.org/W4200152174","https://openalex.org/W4366562928","https://openalex.org/W1576016885","https://openalex.org/W4400280151","https://openalex.org/W4320147520","https://openalex.org/W1971230227","https://openalex.org/W2219751214","https://openalex.org/W7170948592"],"abstract_inverted_index":{"Spatial":[0],"sectioning":[1,100],"of":[2,25,40,45,109,132],"the":[3,30,37,42,49,102,107,113,120,137],"far-field":[4],"noncollinear":[5],"field":[6],"from":[7],"spontaneous":[8],"parametric":[9],"down-conversion":[10],"(SPDC)":[11],"is":[12],"a":[13,59,72,76,90,126],"promising":[14],"approach":[15],"for":[16,129],"multiparty":[17],"quantum":[18],"communication.":[19],"Although":[20],"demonstrations":[21],"with":[22,84,106,119],"six":[23],"pairs":[24],"users":[26],"have":[27],"been":[28],"reported,":[29],"fundamental":[31],"limits":[32],"remain":[33],"unknown.":[34],"These":[35,123],"include":[36],"maximum":[38],"number":[39,108],"channels,":[41],"required":[43],"degree":[44],"channel":[46],"optimization,":[47],"and":[48,70],"dependence":[50],"on":[51],"input":[52,68],"parameters.":[53],"In":[54],"this":[55],"paper,":[56],"we":[57,79],"provide":[58,125],"practical":[60],"framework":[61],"that":[62,99],"answers":[63],"these":[64],"questions":[65],"by":[66],"connecting":[67],"parameters":[69],"invoking":[71],"design":[73,127],"theorem.":[74],"For":[75],"representative":[77],"configuration,":[78],"realize":[80],"12":[81],"user-pair":[82],"channels":[83,110],"routing":[85],"consistency":[86],"exceeding":[87],"$0.9999$":[88],"at":[89],"$12\\%$":[91],"reduction":[92],"in":[93,141],"photon":[94],"flux.":[95],"We":[96],"further":[97],"show":[98],"improves":[101],"accidental-coincidence":[103],"budget":[104],"linearly":[105],"$N$,":[111],"allowing":[112],"aggregate":[114],"key":[115],"rate":[116],"to":[117,136],"scale":[118],"user":[121],"count.":[122],"results":[124],"strategy":[128],"spatial-division":[130],"multiplexing":[131],"entangled":[133],"photons":[134],"analogous":[135],"channel-spacing":[138],"standards":[139],"used":[140],"wavelength-division":[142],"networks.":[143]},"counts_by_year":[],"updated_date":"2026-11-07T11:25:07.637180","created_date":"2026-10-16T00:00:00"}
