{"id":"https://openalex.org/W7166123381","doi":"https://doi.org/10.1364/opticaopen.32787486.v1","title":"Type-I spontaneous parametric down-conversion using supercontinuum optical vortex beam","display_name":"Type-I spontaneous parametric down-conversion using supercontinuum optical vortex beam","publication_year":2026,"publication_date":"2026-06-26","ids":{"openalex":"https://openalex.org/W7166123381","doi":"https://doi.org/10.1364/opticaopen.32787486.v1"},"language":"en","primary_location":{"id":"doi:10.1364/opticaopen.32787486.v1","doi":"https://doi.org/10.1364/opticaopen.32787486.v1","is_oa":true,"landing_page_url":"https://doi.org/10.1364/opticaopen.32787486.v1","pdf_url":"https://preprints.opticaopen.org/articles/preprint/Type-I_spontaneous_parametric_down-conversion_using_supercontinuum_optical_vortex_beam/32787486/1/files/65848572.pdf","source":null,"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Optica Open","raw_type":"posted-content"},"volume":null,"type":"preprint","is_traditional":true,"indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"https://preprints.opticaopen.org/articles/preprint/Type-I_spontaneous_parametric_down-conversion_using_supercontinuum_optical_vortex_beam/32787486/1/files/65848572.pdf","any_repository_has_fulltext":null},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5139417576","display_name":"Abhijit Roy","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I96673099","display_name":"Technical University of Denmark","ror":"https://ror.org/04qtj9h94","country_code":"DK","type":"education","lineage":["https://openalex.org/I96673099"]}],"countries":["DK"],"is_corresponding":false,"raw_author_name":"Abhijit Roy","raw_affiliation_strings":["DTU Electro , Technical University of Denmark , Kongens Lyngby 2800 , Denmark"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"DTU Electro , Technical University of Denmark , Kongens Lyngby 2800 , Denmark","institution_ids":["https://openalex.org/I96673099"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5081658006","display_name":"Ali Mohebi","orcid":"https://orcid.org/0000-0003-1757-9760","observed_orcids":["https://orcid.org/0000-0003-1757-9760"]},"institutions":[{"id":"https://openalex.org/I96673099","display_name":"Technical University of Denmark","ror":"https://ror.org/04qtj9h94","country_code":"DK","type":"education","lineage":["https://openalex.org/I96673099"]}],"countries":["DK"],"is_corresponding":false,"raw_author_name":"Ali Mohebi","raw_affiliation_strings":["DTU Electro , Technical University of Denmark , Kongens Lyngby 2800 , Denmark"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"DTU Electro , Technical University of Denmark , Kongens Lyngby 2800 , Denmark","institution_ids":["https://openalex.org/I96673099"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5103204463","display_name":"Erik Nicolai Christensen","orcid":"https://orcid.org/0000-0001-6195-8974","observed_orcids":["https://orcid.org/0000-0001-6195-8974"]},"institutions":[{"id":"https://openalex.org/I4210154645","display_name":"NKT Holding (Denmark)","ror":"https://ror.org/04zqx6d52","country_code":"DK","type":"company","lineage":["https://openalex.org/I4210154645"]}],"countries":["DK"],"is_corresponding":false,"raw_author_name":"ERIK CHRISTENSEN","raw_affiliation_strings":["NKT Photonics , Blokken 84 , Birkerod 3460 , Denmark"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"NKT Photonics , Blokken 84 , Birkerod 3460 , Denmark","institution_ids":["https://openalex.org/I4210154645"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5012719537","display_name":"Patrick Bowen Montague","orcid":"https://orcid.org/0000-0002-9941-3651","observed_orcids":["https://orcid.org/0000-0002-9941-3651"]},"institutions":[{"id":"https://openalex.org/I4210154645","display_name":"NKT Holding (Denmark)","ror":"https://ror.org/04zqx6d52","country_code":"DK","type":"company","lineage":["https://openalex.org/I4210154645"]}],"countries":["DK"],"is_corresponding":false,"raw_author_name":"Patrick Bowen Montague","raw_affiliation_strings":["NKT Photonics , Blokken 84 , Birkerod 3460 , Denmark"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"NKT Photonics , Blokken 84 , Birkerod 3460 , Denmark","institution_ids":["https://openalex.org/I4210154645"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5109699650","display_name":"Crislane de Brito","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Crislane de Brito","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5039492036","display_name":"Sylwia M. Kolenderska","orcid":"https://orcid.org/0009-0000-9265-9459","observed_orcids":["https://orcid.org/0009-0000-9265-9459"]},"institutions":[{"id":"https://openalex.org/I185492890","display_name":"University of Canterbury","ror":"https://ror.org/03y7q9t39","country_code":"NZ","type":"education","lineage":["https://openalex.org/I185492890"]},{"id":"https://openalex.org/I3019271933","display_name":"Nicolaus Copernicus University","ror":"https://ror.org/0102mm775","country_code":"PL","type":"education","lineage":["https://openalex.org/I3019271933"]}],"countries":["NZ","PL"],"is_corresponding":false,"raw_author_name":"Sylwia Kolenderska","raw_affiliation_strings":["Institute of Physics , Faculty of Physics, Astronomy and Informatics , Nicolaus Copernicus University , Grudziadzka 5 , 87-100 Torun 87-100 , Poland","School of Physical and Chemical Sciences , University of Canterbury , Christchurch , New Zealand"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Institute of Physics , Faculty of Physics, Astronomy and Informatics , Nicolaus Copernicus University , Grudziadzka 5 , 87-100 Torun 87-100 , Poland","institution_ids":["https://openalex.org/I3019271933"]},{"raw_affiliation_string":"School of Physical and Chemical Sciences , University of Canterbury , Christchurch , New Zealand","institution_ids":["https://openalex.org/I185492890"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5073121229","display_name":"Piotr Leszek Kolenderski","orcid":"https://orcid.org/0000-0003-2478-2417","observed_orcids":["https://orcid.org/0000-0003-2478-2417"]},"institutions":[{"id":"https://openalex.org/I3019271933","display_name":"Nicolaus Copernicus University","ror":"https://ror.org/0102mm775","country_code":"PL","type":"education","lineage":["https://openalex.org/I3019271933"]}],"countries":["PL"],"is_corresponding":false,"raw_author_name":"Piotr Kolenderski","raw_affiliation_strings":["Institute of Physics , Faculty of Physics, Astronomy and Informatics , Nicolaus Copernicus University , Grudziadzka 5 , 87-100 Torun 87-100 , Poland"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Institute of Physics , Faculty of Physics, Astronomy and Informatics , Nicolaus Copernicus University , Grudziadzka 5 , 87-100 Torun 87-100 , Poland","institution_ids":["https://openalex.org/I3019271933"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5066159765","display_name":"Aur\u00e8le J. L. Adam","orcid":"https://orcid.org/0000-0002-6727-946X","observed_orcids":["https://orcid.org/0000-0002-6727-946X"]},"institutions":[{"id":"https://openalex.org/I98358874","display_name":"Delft University of Technology","ror":"https://ror.org/02e2c7k09","country_code":"NL","type":"education","lineage":["https://openalex.org/I98358874"]}],"countries":["NL"],"is_corresponding":false,"raw_author_name":"Aurele Adam","raw_affiliation_strings":["Department of Imaging Physics , Delft University of Technology , 2628 CJ Delft , Netherlands"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Imaging Physics , Delft University of Technology , 2628 CJ Delft , Netherlands","institution_ids":["https://openalex.org/I98358874"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5077857323","display_name":"Enrico Conca","orcid":"https://orcid.org/0000-0002-0516-9193","observed_orcids":["https://orcid.org/0000-0002-0516-9193"]},"institutions":[{"id":"https://openalex.org/I4210127265","display_name":"Micro Photon Devices","ror":"https://ror.org/03jafxc29","country_code":"IT","type":"company","lineage":["https://openalex.org/I4210127265"]}],"countries":["IT"],"is_corresponding":false,"raw_author_name":"Enrico CONCA","raw_affiliation_strings":["Micro Photon Devices , Via Waltraud Gebert Deeg , 3F , Bolzano 39100 , Italy"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Micro Photon Devices , Via Waltraud Gebert Deeg , 3F , Bolzano 39100 , Italy","institution_ids":["https://openalex.org/I4210127265"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5009310020","display_name":"Simone Tisa","orcid":"https://orcid.org/0009-0005-2388-3170","observed_orcids":["https://orcid.org/0009-0005-2388-3170"]},"institutions":[{"id":"https://openalex.org/I4210127265","display_name":"Micro Photon Devices","ror":"https://ror.org/03jafxc29","country_code":"IT","type":"company","lineage":["https://openalex.org/I4210127265"]}],"countries":["IT"],"is_corresponding":false,"raw_author_name":"Simone Tisa","raw_affiliation_strings":["Micro Photon Devices , Via Waltraud Gebert Deeg , 3F , Bolzano 39100 , Italy"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Micro Photon Devices , Via Waltraud Gebert Deeg , 3F , Bolzano 39100 , Italy","institution_ids":["https://openalex.org/I4210127265"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5038224948","display_name":"Ole Bang","orcid":"https://orcid.org/0000-0002-8041-9156","observed_orcids":["https://orcid.org/0000-0002-8041-9156"]},"institutions":[{"id":"https://openalex.org/I96673099","display_name":"Technical University of Denmark","ror":"https://ror.org/04qtj9h94","country_code":"DK","type":"education","lineage":["https://openalex.org/I96673099"]}],"countries":["DK"],"is_corresponding":false,"raw_author_name":"Ole Bang","raw_affiliation_strings":["DTU Electro , Technical University of Denmark , Kongens Lyngby 2800 , Denmark"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"DTU Electro , Technical University of Denmark , Kongens Lyngby 2800 , Denmark","institution_ids":["https://openalex.org/I96673099"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5139441534","display_name":"Niels Israelsen","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I96673099","display_name":"Technical University of Denmark","ror":"https://ror.org/04qtj9h94","country_code":"DK","type":"education","lineage":["https://openalex.org/I96673099"]}],"countries":["DK"],"is_corresponding":false,"raw_author_name":"Niels Israelsen","raw_affiliation_strings":["DTU Electro , Technical University of Denmark , Kongens Lyngby 2800 , Denmark"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"DTU Electro , Technical University of Denmark , Kongens Lyngby 2800 , Denmark","institution_ids":["https://openalex.org/I96673099"]}]}],"institutions":[],"countries_distinct_count":5,"institutions_distinct_count":6,"corresponding_author_ids":[],"corresponding_institution_ids":[],"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/T10490","display_name":"Orbital Angular Momentum in Optics","score":0.9779999852180481,"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/T10490","display_name":"Orbital Angular Momentum in Optics","score":0.9779999852180481,"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/T10020","display_name":"Quantum Information and Cryptography","score":0.015599999576807022,"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/T10566","display_name":"Laser-Matter Interactions and Applications","score":0.0017999999690800905,"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":0.9610000252723694},{"id":"https://openalex.org/keywords/optical-vortex","display_name":"optical vortices","score":0.8399999737739563},{"id":"https://openalex.org/keywords/supercontinuum-light","display_name":"supercontinuum light","score":0.746999979019165},{"id":"https://openalex.org/keywords/topological-charge","display_name":"topological charge","score":0.8090000152587891},{"id":"https://openalex.org/keywords/spiral-phase-plate","display_name":"spiral phase plate","score":0.9039999842643738},{"id":"https://openalex.org/keywords/fractional-vortices","display_name":"fractional vortices","score":0.7350000143051147},{"id":"https://openalex.org/keywords/photon-pairs","display_name":"photon pairs","score":0.6610000133514404},{"id":"https://openalex.org/keywords/two-photon-entanglement","display_name":"two-photon entanglement","score":0.7409999966621399},{"id":"https://openalex.org/keywords/quantum-imaging","display_name":"quantum imaging","score":0.7179999947547913},{"id":"https://openalex.org/keywords/mode-purity","display_name":"mode purity","score":0.4909999966621399}],"concepts":[{"id":"https://openalex.org/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","level":1,"score":0.7985000014305115},{"id":"https://openalex.org/C191154138","wikidata":"https://www.wikidata.org/wiki/Q1059326","display_name":"Supercontinuum","level":4,"score":0.7759000062942505},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.6816999912261963},{"id":"https://openalex.org/C168834538","wikidata":"https://www.wikidata.org/wiki/Q3705329","display_name":"Beam (structure)","level":2,"score":0.6176999807357788},{"id":"https://openalex.org/C115171683","wikidata":"https://www.wikidata.org/wiki/Q6493038","display_name":"Laser beam quality","level":4,"score":0.6104000210762024},{"id":"https://openalex.org/C173781883","wikidata":"https://www.wikidata.org/wiki/Q850928","display_name":"M squared","level":5,"score":0.5414000153541565},{"id":"https://openalex.org/C203103908","wikidata":"https://www.wikidata.org/wiki/Q3689728","display_name":"Spontaneous parametric down-conversion","level":4,"score":0.5216000080108643},{"id":"https://openalex.org/C159317903","wikidata":"https://www.wikidata.org/wiki/Q3198","display_name":"Photon","level":2,"score":0.4740999937057495},{"id":"https://openalex.org/C62172962","wikidata":"https://www.wikidata.org/wiki/Q1230543","display_name":"Beam divergence","level":5,"score":0.39890000224113464},{"id":"https://openalex.org/C100796255","wikidata":"https://www.wikidata.org/wiki/Q180407","display_name":"Beam parameter product","level":5,"score":0.39259999990463257},{"id":"https://openalex.org/C119440689","wikidata":"https://www.wikidata.org/wiki/Q4876179","display_name":"Beam diameter","level":4,"score":0.38040000200271606},{"id":"https://openalex.org/C77223115","wikidata":"https://www.wikidata.org/wiki/Q634781","display_name":"Topological quantum number","level":2,"score":0.3675999939441681},{"id":"https://openalex.org/C520434653","wikidata":"https://www.wikidata.org/wiki/Q38867","display_name":"Laser","level":2,"score":0.3517000079154968},{"id":"https://openalex.org/C191463272","wikidata":"https://www.wikidata.org/wiki/Q2493660","display_name":"Light beam","level":2,"score":0.31679999828338623},{"id":"https://openalex.org/C62103226","wikidata":"https://www.wikidata.org/wiki/Q902598","display_name":"Doppler broadening","level":3,"score":0.3012000024318695},{"id":"https://openalex.org/C117251300","wikidata":"https://www.wikidata.org/wiki/Q1849855","display_name":"Parametric statistics","level":2,"score":0.2996000051498413},{"id":"https://openalex.org/C2781389838","wikidata":"https://www.wikidata.org/wiki/Q830111","display_name":"Bessel beam","level":3,"score":0.28189998865127563},{"id":"https://openalex.org/C44280652","wikidata":"https://www.wikidata.org/wiki/Q104837","display_name":"Phase (matter)","level":2,"score":0.2768999934196472},{"id":"https://openalex.org/C78854221","wikidata":"https://www.wikidata.org/wiki/Q756033","display_name":"Nonlinear optics","level":3,"score":0.2727999985218048},{"id":"https://openalex.org/C8524419","wikidata":"https://www.wikidata.org/wiki/Q5286948","display_name":"Optical parametric amplifier","level":4,"score":0.2687999904155731},{"id":"https://openalex.org/C133807990","wikidata":"https://www.wikidata.org/wiki/Q3217909","display_name":"Spectral width","level":3,"score":0.26739999651908875},{"id":"https://openalex.org/C6260449","wikidata":"https://www.wikidata.org/wiki/Q41364","display_name":"Wavelength","level":2,"score":0.26510000228881836},{"id":"https://openalex.org/C204323151","wikidata":"https://www.wikidata.org/wiki/Q905424","display_name":"Range (aeronautics)","level":2,"score":0.26350000500679016},{"id":"https://openalex.org/C68717125","wikidata":"https://www.wikidata.org/wiki/Q735602","display_name":"Quantum optics","level":2,"score":0.26179999113082886},{"id":"https://openalex.org/C20788544","wikidata":"https://www.wikidata.org/wiki/Q467054","display_name":"Photonics","level":2,"score":0.25519999861717224},{"id":"https://openalex.org/C130404759","wikidata":"https://www.wikidata.org/wiki/Q2077002","display_name":"Optical vortex","level":3,"score":0.25220000743865967}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1364/opticaopen.32787486.v1","doi":"https://doi.org/10.1364/opticaopen.32787486.v1","is_oa":true,"landing_page_url":"https://doi.org/10.1364/opticaopen.32787486.v1","pdf_url":"https://preprints.opticaopen.org/articles/preprint/Type-I_spontaneous_parametric_down-conversion_using_supercontinuum_optical_vortex_beam/32787486/1/files/65848572.pdf","source":null,"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Optica Open","raw_type":"posted-content"}],"best_oa_location":{"id":"doi:10.1364/opticaopen.32787486.v1","doi":"https://doi.org/10.1364/opticaopen.32787486.v1","is_oa":true,"landing_page_url":"https://doi.org/10.1364/opticaopen.32787486.v1","pdf_url":"https://preprints.opticaopen.org/articles/preprint/Type-I_spontaneous_parametric_down-conversion_using_supercontinuum_optical_vortex_beam/32787486/1/files/65848572.pdf","source":null,"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Optica Open","raw_type":"posted-content"},"sustainable_development_goals":[],"study_designs":[],"awards":[{"id":"https://openalex.org/G1431573125","display_name":null,"funder_award_id":"101070062","funder_id":"https://openalex.org/F4320334322","funder_display_name":"HORIZON EUROPE Framework Programme"},{"id":"https://openalex.org/G2038312181","display_name":null,"funder_award_id":"00037822","funder_id":"https://openalex.org/F4320310490","funder_display_name":"Villum Fonden"},{"id":"https://openalex.org/G3736628415","display_name":"SENSING USING QUANTUM OCT WITH AI","funder_award_id":"101070062","funder_id":"https://openalex.org/F4320320300","funder_display_name":"European Commission"}],"funders":[{"id":"https://openalex.org/F4320310490","display_name":"Villum Fonden","ror":"https://ror.org/007ww2d15"},{"id":"https://openalex.org/F4320320300","display_name":"European Commission","ror":"https://ror.org/00k4n6c32"},{"id":"https://openalex.org/F4320323153","display_name":"Danmarks Tekniske Universitet","ror":"https://ror.org/04qtj9h94"},{"id":"https://openalex.org/F4320334322","display_name":"HORIZON EUROPE Framework Programme","ror":null}],"has_content":{"grobid_xml":true,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W7166123381.pdf","grobid_xml":"https://content.openalex.org/works/W7166123381.grobid-xml"},"referenced_works_count":0,"referenced_works":[],"related_works":["https://openalex.org/W2002074583","https://openalex.org/W2101304179","https://openalex.org/W3198140343","https://openalex.org/W2964166967","https://openalex.org/W4395091007","https://openalex.org/W2152675501","https://openalex.org/W2021486279","https://openalex.org/W2898312762","https://openalex.org/W3182510429","https://openalex.org/W4416530163"],"abstract_inverted_index":{"An":[0],"optical":[1],"vortex":[2],"(OV)":[3],"beam":[4,8,46,51,64,88,102,131,149,190,203,219],"is":[5,25,103,113,132,150,211,228,240,258],"a":[6,10,14,26,43,48,66,74,85,141,165,184,205],"singular":[7],"with":[9,65,84,187,204],"helical":[11],"wavefront":[12],"and":[13,47,108,155,191,220,256],"spatially":[15],"varying":[16],"phase":[17,77],"profile,":[18],"whereas":[19],"spontaneous":[20],"parametric":[21],"down":[22],"conversion":[23],"(SPDC)":[24],"well-established":[27],"process":[28],"of":[29,33,58,69,89,97,120,126,146,163,177,200,208,253,259],"generating":[30,254],"two-photon":[31],"state":[32],"light.":[34],"Here,":[35],"we":[36,55,174],"report":[37,56,175],"photon":[38,178],"generation":[39,57,145,176],"via":[40,180],"SPDC":[41,181,223],"using":[42,105,140,164,213,231],"supercontinuum":[44],"(SC)":[45],"SC":[49,62,86,100,129,189,195,202],"OV":[50,63,101,130,148,196,236],"as":[52],"pump.":[53],"Specifically,":[54],"an":[59],"integer":[60,193],"charge":[61,119,194],"spectral":[67,92,206],"range":[68,207],"420-480":[70],"nm":[71,83,91,210],"by":[72,134,182],"illuminating":[73],"narrow-band":[75],"spiral":[76],"plate":[78],"(SPP)":[79],"designed":[80],"for":[81],"467":[82],"light":[87],"390-500":[90],"range.":[93],"The":[94,123,198],"broad":[95],"bandwidth":[96],"the":[98,117,121,127,156,161,188,192,201,217,222,232],"generated":[99,128,233],"confirmed":[104,212],"bandpass":[106,214],"filters,":[107],"cylindrical":[109],"lens":[110],"based":[111],"measurement":[112,227],"adapted":[114],"to":[115,160,242],"estimate":[116],"topological":[118],"beam.":[122,197,237],"mode":[124],"purity":[125],"determined":[133],"analysing":[135],"its":[136],"complex":[137],"field,":[138],"measured":[139],"Mach\u2013Zehnder":[142],"interferometer.":[143],"Besides,":[144],"fractional":[147,235],"observed":[151],"around":[152],"400":[153],"nm,":[154],"results":[157],"are":[158],"compared":[159],"case":[162],"CW":[166,234],"laser":[167],"operating":[168],"at":[169],"405":[170],"nm.":[171],"In":[172],"addition,":[173],"pairs":[179],"pumping":[183],"\u03b2-BBO":[185],"crystal":[186],"down-conversion":[199],"60":[209],"filters":[215],"in":[216,245],"pump":[218],"recording":[221],"signal.":[224],"A":[225],"similar":[226],"also":[229],"conducted":[230],"This":[238],"investigation":[239],"expected":[241],"be":[243],"useful":[244],"quantum":[246],"imaging":[247],"applications,":[248],"where":[249],"exploring":[250],"new":[251],"ways":[252],"photons":[255],"entanglement":[257],"increasing":[260],"interest.":[261]},"counts_by_year":[],"updated_date":"2026-11-09T13:22:03.289127","created_date":"2026-06-27T00:00:00"}
