{"id":"https://openalex.org/W7220964220","doi":"https://doi.org/10.48550/arxiv.2610.08924","title":"Superconducting edge contact to a buried Ge quantum well","display_name":"Superconducting edge contact to a buried Ge quantum well","publication_year":2026,"publication_date":"2026-10-06","ids":{"openalex":"https://openalex.org/W7220964220","doi":"https://doi.org/10.48550/arxiv.2610.08924"},"language":"en","primary_location":{"id":"pmh:oai:arXiv.org:2610.08924","doi":null,"is_oa":true,"landing_page_url":"https://arxiv.org/abs/2610.08924","pdf_url":"https://arxiv.org/pdf/2610.08924","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":"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/2610.08924","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5102567623","display_name":"Dina Sokolova","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I157556583","display_name":"Institute of Science and Technology Austria","ror":"https://ror.org/03gnh5541","country_code":"AT","type":"education","lineage":["https://openalex.org/I157556583"]}],"countries":["AT"],"is_corresponding":false,"raw_author_name":"Sokolova, Dina","raw_affiliation_strings":["Institute of Science and Technology Austria , Am Campus 1 , Klosterneuburg , 3400 , Austria"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Institute of Science and Technology Austria , Am Campus 1 , Klosterneuburg , 3400 , Austria","institution_ids":["https://openalex.org/I157556583"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5104161612","display_name":"Davide Costa","orcid":"https://orcid.org/0009-0008-9053-049X","observed_orcids":["https://orcid.org/0009-0008-9053-049X"]},"institutions":[{"id":"https://openalex.org/I4210145640","display_name":"QuTech","ror":"https://ror.org/04wf30j82","country_code":"NL","type":"facility","lineage":["https://openalex.org/I148297040","https://openalex.org/I4210145640","https://openalex.org/I98358874"]},{"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":"Costa, Davide","raw_affiliation_strings":["QuTech and Kavli Institute of Nanoscience , Delft University of Technology , 2600 GA Delft , The Netherlands"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"QuTech and Kavli Institute of Nanoscience , Delft University of Technology , 2600 GA Delft , The Netherlands","institution_ids":["https://openalex.org/I4210145640","https://openalex.org/I98358874"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5079497724","display_name":"Davide Degli Esposti","orcid":"https://orcid.org/0000-0003-2275-8288","observed_orcids":["https://orcid.org/0000-0003-2275-8288"]},"institutions":[{"id":"https://openalex.org/I4210145640","display_name":"QuTech","ror":"https://ror.org/04wf30j82","country_code":"NL","type":"facility","lineage":["https://openalex.org/I148297040","https://openalex.org/I4210145640","https://openalex.org/I98358874"]},{"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":"Esposti, Davide Degli","raw_affiliation_strings":["QuTech and Kavli Institute of Nanoscience , Delft University of Technology , 2600 GA Delft , The Netherlands"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"QuTech and Kavli Institute of Nanoscience , Delft University of Technology , 2600 GA Delft , The Netherlands","institution_ids":["https://openalex.org/I4210145640","https://openalex.org/I98358874"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5040598832","display_name":"Tommaso Costanzo","orcid":"https://orcid.org/0000-0001-9732-3815","observed_orcids":["https://orcid.org/0000-0001-9732-3815"]},"institutions":[{"id":"https://openalex.org/I157556583","display_name":"Institute of Science and Technology Austria","ror":"https://ror.org/03gnh5541","country_code":"AT","type":"education","lineage":["https://openalex.org/I157556583"]}],"countries":["AT"],"is_corresponding":false,"raw_author_name":"Costanzo, Tommaso","raw_affiliation_strings":["Institute of Science and Technology Austria , Am Campus 1 , Klosterneuburg , 3400 , Austria"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Institute of Science and Technology Austria , Am Campus 1 , Klosterneuburg , 3400 , Austria","institution_ids":["https://openalex.org/I157556583"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5028014163","display_name":"Giordano Scappucci","orcid":"https://orcid.org/0000-0003-2512-0079","observed_orcids":["https://orcid.org/0000-0003-2512-0079"]},"institutions":[{"id":"https://openalex.org/I4210145640","display_name":"QuTech","ror":"https://ror.org/04wf30j82","country_code":"NL","type":"facility","lineage":["https://openalex.org/I148297040","https://openalex.org/I4210145640","https://openalex.org/I98358874"]},{"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":"Scappucci, Giordano","raw_affiliation_strings":["QuTech and Kavli Institute of Nanoscience , Delft University of Technology , 2600 GA Delft , The Netherlands"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"QuTech and Kavli Institute of Nanoscience , Delft University of Technology , 2600 GA Delft , The Netherlands","institution_ids":["https://openalex.org/I4210145640","https://openalex.org/I98358874"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5003859181","display_name":"Georgios Katsaros","orcid":"https://orcid.org/0000-0001-8342-202X","observed_orcids":["https://orcid.org/0000-0001-8342-202X"]},"institutions":[{"id":"https://openalex.org/I157556583","display_name":"Institute of Science and Technology Austria","ror":"https://ror.org/03gnh5541","country_code":"AT","type":"education","lineage":["https://openalex.org/I157556583"]}],"countries":["AT"],"is_corresponding":false,"raw_author_name":"Katsaros, Georgios","raw_affiliation_strings":["Institute of Science and Technology Austria , Am Campus 1 , Klosterneuburg , 3400 , Austria"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Institute of Science and Technology Austria , Am Campus 1 , Klosterneuburg , 3400 , Austria","institution_ids":["https://openalex.org/I157556583"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5024237022","display_name":"Anton V. Bubis","orcid":"https://orcid.org/0000-0002-9344-1942","observed_orcids":["https://orcid.org/0000-0002-9344-1942"]},"institutions":[{"id":"https://openalex.org/I157556583","display_name":"Institute of Science and Technology Austria","ror":"https://ror.org/03gnh5541","country_code":"AT","type":"education","lineage":["https://openalex.org/I157556583"]}],"countries":["AT"],"is_corresponding":false,"raw_author_name":"Bubis, Anton V.","raw_affiliation_strings":["Institute of Science and Technology Austria , Am Campus 1 , Klosterneuburg , 3400 , Austria"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Institute of Science and Technology Austria , Am Campus 1 , Klosterneuburg , 3400 , Austria","institution_ids":["https://openalex.org/I157556583"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":3,"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/T10382","display_name":"Quantum and electron transport phenomena","score":0.8241999745368958,"subfield":{"id":"https://openalex.org/subfields/3104","display_name":"Condensed Matter Physics"},"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/T10382","display_name":"Quantum and electron transport phenomena","score":0.8241999745368958,"subfield":{"id":"https://openalex.org/subfields/3104","display_name":"Condensed Matter Physics"},"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/T10657","display_name":"Topological Materials and Phenomena","score":0.09080000221729279,"subfield":{"id":"https://openalex.org/subfields/3104","display_name":"Condensed Matter Physics"},"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":0.0215000007301569,"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/germanium-quantum-wells","display_name":"germanium quantum wells","score":0.7419999837875366},{"id":"https://openalex.org/keywords/josephson-junctions","display_name":"Josephson junctions","score":0.9409999847412109},{"id":"https://openalex.org/keywords/andreev-bound-states","display_name":"Andreev bound states","score":0.8610000014305115},{"id":"https://openalex.org/keywords/andreev-reflection","display_name":"Andreev reflection","score":0.9169999957084656},{"id":"https://openalex.org/keywords/quantum-point-contacts","display_name":"quantum point contacts","score":0.906000018119812},{"id":"https://openalex.org/keywords/superconducting-quantum-point-contact","display_name":"superconducting quantum point contact","score":0.8180000185966492},{"id":"https://openalex.org/keywords/interface-transparency","display_name":"interface transparency","score":0.6690000295639038},{"id":"https://openalex.org/keywords/dry-etching","display_name":"dry etching","score":0.6869999766349792},{"id":"https://openalex.org/keywords/wet-etching","display_name":"wet etching","score":0.9909999966621399},{"id":"https://openalex.org/keywords/topological-superconductivity","display_name":"topological superconductivity","score":0.7459999918937683}],"concepts":[{"id":"https://openalex.org/C26873012","wikidata":"https://www.wikidata.org/wiki/Q214781","display_name":"Condensed matter physics","level":1,"score":0.7996000051498413},{"id":"https://openalex.org/C150724011","wikidata":"https://www.wikidata.org/wiki/Q1055226","display_name":"Quantum point contact","level":4,"score":0.7739999890327454},{"id":"https://openalex.org/C184423171","wikidata":"https://www.wikidata.org/wiki/Q501629","display_name":"Andreev reflection","level":3,"score":0.7275999784469604},{"id":"https://openalex.org/C54101563","wikidata":"https://www.wikidata.org/wiki/Q124131","display_name":"Superconductivity","level":2,"score":0.6592000126838684},{"id":"https://openalex.org/C29169072","wikidata":"https://www.wikidata.org/wiki/Q521166","display_name":"Quantum well","level":3,"score":0.621399998664856},{"id":"https://openalex.org/C79794668","wikidata":"https://www.wikidata.org/wiki/Q1616270","display_name":"Heterojunction","level":2,"score":0.5964000225067139},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.5360999703407288},{"id":"https://openalex.org/C84114770","wikidata":"https://www.wikidata.org/wiki/Q46344","display_name":"Quantum","level":2,"score":0.46160000562667847},{"id":"https://openalex.org/C12038964","wikidata":"https://www.wikidata.org/wiki/Q764228","display_name":"Josephson effect","level":3,"score":0.45660001039505005},{"id":"https://openalex.org/C100460472","wikidata":"https://www.wikidata.org/wiki/Q2368605","display_name":"Etching (microfabrication)","level":3,"score":0.3621000051498413},{"id":"https://openalex.org/C124657808","wikidata":"https://www.wikidata.org/wiki/Q1133068","display_name":"Quantum dot","level":2,"score":0.33500000834465027},{"id":"https://openalex.org/C2780030769","wikidata":"https://www.wikidata.org/wiki/Q4968575","display_name":"Plateau (mathematics)","level":2,"score":0.33480000495910645},{"id":"https://openalex.org/C49995870","wikidata":"https://www.wikidata.org/wiki/Q7643234","display_name":"Supercurrent","level":4,"score":0.33340001106262207},{"id":"https://openalex.org/C120398109","wikidata":"https://www.wikidata.org/wiki/Q175751","display_name":"Quantum tunnelling","level":2,"score":0.3264000117778778},{"id":"https://openalex.org/C96835668","wikidata":"https://www.wikidata.org/wiki/Q3457198","display_name":"Macroscopic quantum phenomena","level":3,"score":0.3190999925136566},{"id":"https://openalex.org/C1291036","wikidata":"https://www.wikidata.org/wiki/Q1191918","display_name":"Dry etching","level":4,"score":0.29019999504089355},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.2851000130176544},{"id":"https://openalex.org/C200369452","wikidata":"https://www.wikidata.org/wiki/Q1047822","display_name":"Quantum Hall effect","level":3,"score":0.2849000096321106},{"id":"https://openalex.org/C180214583","wikidata":"https://www.wikidata.org/wiki/Q4439348","display_name":"Quantum limit","level":3,"score":0.28119999170303345},{"id":"https://openalex.org/C58053490","wikidata":"https://www.wikidata.org/wiki/Q176555","display_name":"Quantum computer","level":3,"score":0.27649998664855957},{"id":"https://openalex.org/C192562407","wikidata":"https://www.wikidata.org/wiki/Q228736","display_name":"Materials science","level":0,"score":0.2757999897003174},{"id":"https://openalex.org/C184720557","wikidata":"https://www.wikidata.org/wiki/Q7825049","display_name":"Topology (electrical circuits)","level":2,"score":0.26489999890327454},{"id":"https://openalex.org/C85725439","wikidata":"https://www.wikidata.org/wiki/Q466686","display_name":"Anisotropy","level":2,"score":0.25529998540878296},{"id":"https://openalex.org/C2777205815","wikidata":"https://www.wikidata.org/wiki/Q25304680","display_name":"Quantum anomalous Hall effect","level":4,"score":0.25119999051094055}],"mesh":[],"locations_count":2,"locations":[{"id":"pmh:oai:arXiv.org:2610.08924","doi":null,"is_oa":true,"landing_page_url":"https://arxiv.org/abs/2610.08924","pdf_url":"https://arxiv.org/pdf/2610.08924","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":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"text"},{"id":"doi:10.48550/arxiv.2610.08924","doi":"https://doi.org/10.48550/arxiv.2610.08924","is_oa":true,"landing_page_url":"https://doi.org/10.48550/arxiv.2610.08924","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":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"Preprint"}],"best_oa_location":{"id":"pmh:oai:arXiv.org:2610.08924","doi":null,"is_oa":true,"landing_page_url":"https://arxiv.org/abs/2610.08924","pdf_url":"https://arxiv.org/pdf/2610.08924","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":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"text"},"sustainable_development_goals":[],"study_designs":[],"awards":[{"id":"https://openalex.org/G427629049","display_name":"Superconducting spin qubits in planar Ge","funder_award_id":"PAT 7682124","funder_id":"https://openalex.org/F4320321181","funder_display_name":"Austrian Science Fund"},{"id":"https://openalex.org/G5376755187","display_name":"Quantum bits with Kitaev Transmons","funder_award_id":"101115315","funder_id":"https://openalex.org/F4320338448","funder_display_name":"HORIZON EUROPE European Innovation Council"},{"id":"https://openalex.org/G9000171176","display_name":null,"funder_award_id":"10.55776/PAT7682124","funder_id":"https://openalex.org/F4320321181","funder_display_name":"Austrian Science Fund"}],"funders":[{"id":"https://openalex.org/F4320315473","display_name":"Institute of Science and Technology Austria","ror":"https://ror.org/03gnh5541"},{"id":"https://openalex.org/F4320321181","display_name":"Austrian Science Fund","ror":"https://ror.org/013tf3c58"},{"id":"https://openalex.org/F4320338448","display_name":"HORIZON EUROPE European Innovation Council","ror":"https://ror.org/05cx8cy07"}],"has_content":{"grobid_xml":true,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W7220964220.pdf","grobid_xml":"https://content.openalex.org/works/W7220964220.grobid-xml"},"referenced_works_count":5,"referenced_works":["https://openalex.org/W7117766937","https://openalex.org/W7131622125","https://openalex.org/W7160604167","https://openalex.org/W7202200276","https://openalex.org/W7206175301"],"related_works":["https://openalex.org/W7166643470","https://openalex.org/W2895868281","https://openalex.org/W7202200276","https://openalex.org/W2991668814","https://openalex.org/W2790541909","https://openalex.org/W1980818334","https://openalex.org/W2965067835","https://openalex.org/W2802931144","https://openalex.org/W2047954653","https://openalex.org/W3045727607"],"abstract_inverted_index":{"Semiconductor-superconductor":[0],"hybrid":[1,21,29,152],"systems":[2,30],"form":[3],"the":[4,35,73,103,109,120,133],"basis":[5],"for":[6,80,144],"a":[7,141],"broad":[8],"range":[9],"of":[10,27,39,111,135],"quantum":[11,22,44,53,74,95,117,148],"phenomena,":[12],"such":[13,52],"as":[14,140],"Andreev":[15,100,113],"bound":[16],"states,":[17],"topological":[18],"superconductivity,":[19],"and":[20,137],"Hall":[23],"states.":[24],"The":[25],"performance":[26],"these":[28],"can":[31],"strongly":[32],"benefit":[33],"from":[34],"exceptional":[36],"electronic":[37],"properties":[38],"heterostructures":[40],"with":[41,62,102],"deeply":[42,146],"buried":[43,147],"wells.":[45],"However,":[46],"establishing":[47],"high-quality":[48],"superconducting":[49,116,151],"contacts":[50,97],"to":[51,71],"wells":[54,149],"remains":[55],"challenging.":[56],"Here,":[57],"we":[58],"address":[59],"this":[60,87],"problem":[61],"an":[63],"edge-contact":[64],"approach":[65,88],"that":[66],"combines":[67],"anisotropic":[68],"dry":[69,136],"etching":[70,79,139],"access":[72],"well":[75],"followed":[76],"by":[77,127],"wet":[78,138],"interface":[81,92],"preparation.":[82],"Josephson":[83],"junctions":[84],"fabricated":[85],"using":[86],"consistently":[89],"exhibit":[90],"near-unity":[91],"transparency,":[93],"while":[94],"point":[96,118],"show":[98],"strong":[99],"enhancement,":[101],"first":[104],"conductance":[105],"plateau":[106],"approaching":[107],"$4e^2/h$,":[108],"limit":[110],"perfect":[112],"reflection.":[114],"In":[115],"contacts,":[119],"high":[121],"contact":[122],"quality":[123],"is":[124],"further":[125],"manifested":[126],"quantized":[128],"supercurrent.":[129],"These":[130],"results":[131],"establish":[132],"combination":[134],"robust":[142],"strategy":[143],"integrating":[145],"into":[150],"devices.":[153]},"counts_by_year":[],"updated_date":"2026-11-07T11:25:07.637180","created_date":"2026-10-09T00:00:00"}
