https://m2.mtmt.hu/ hun 2026-09-20 21:10 JournalArticle 32204289 ADMIN_APPROVED true Department of Networked Systems and Services, Budapest University of Technology and Economics, Budapest, 1117, Hungary MTA-BME Information Systems Research Group, Hungarian Academy of Sciences, Budapest, 1051, Hungary Export Date: 2 December 2021 CODEN: TCSCD Correspondence Address: Gyongyosi, L.; Department of Networked Systems and Services, Hungary; email: gyongyosi@hit.bme.hu Funding details: BME FIKP-MI/SC Funding details: 2017-1.2.1-NKP-2017-00001 Funding details: Hungarian Scientific Research Fund, OTKA, OTKA K-112125 Funding details: Magyar Tudományos Akadémia, MTA Funding details: Emberi Eroforrások Minisztériuma, EMMI Funding details: Nemzeti Kutatási, Fejlesztési és Innovaciós Alap, NKFIA, TUDFO/51757/2019-ITM Funding details: Innovációs és Technológiai Minisztérium Funding details: National Research, Development and Innovation Office Funding text 1: The research reported in this paper has been supported by the Hungarian Academy of Sciences (MTA Premium Postdoctoral Research Program 2019), by the National Research, Development and Innovation Fund ( TUDFO/51757/2019-ITM , Thematic Excellence Program), by the National Research Development and Innovation Office of Hungary (Project No. 2017-1.2.1-NKP-2017-00001 ), by the Hungarian Scientific Research Fund - OTKA K-112125 and in part by the BME Artificial Intelligence FIKP grant of EMMI (Budapest University of Technology, BME FIKP-MI/SC ), and by the Ministry of Innovation and Technology and the National Research, Development and Innovation Office within the Quantum Information National Laboratory of Hungary. 0 false 2026-05-21T03:59:01.060+0000 2024-05-22T20:57:56.598+0000 2021-09-16T08:40:30.747+0000 true 10040623 Gyöngyösi László /api/author/10040623 Author Gyöngyösi László (Informatika) true 10040623 2024-04-24T10:04:19.586+0000 2024-04-24T10:04:19.586+0000 2024-05-22T20:57:57.016+0000 true 10003133 Boros Annamária /api/admin/10003133 Admin Boros Annamária (MTMT Központi admin) true 10003133 Admin 10003133 /api/admin/10003133 Boros Annamária (MTMT Központi admin) Boros Annamária true 10003133 true 2024-05-27T17:21:32.173+0000 true false true 24 24 /api/publicationtype/24 PublicationType Folyóiratcikk 1 true 24 JournalArticle true 10000059 Article true 24 24 /api/publicationtype/24 PublicationType Folyóiratcikk 1 true 24 JournalArticle /api/subtype/10000059 Szakcikk SubType Szakcikk (Folyóiratcikk) 101 true 10000059 true 1 /api/category/1 Category Tudományos true 1 L., Gyongyosi true true /api/journal/4260 REVIEWED THEORETICAL COMPUTER SCIENCE 0304-3975 1879-2294 true false 4260 false 4260 true 0304-3975 1879-2294 Journal FOREIGN 893 146 158 146 13 2021 The performance of a continuous-variable quantum key distribution (CVQKD) protocol depends on the efficiency of the post-processing of measurement results. The post-processing methods extract statistical information from the raw data, establish the mutual knowledge between the parties, and produce a final key that provides absolute security. The post-processing phase is a bottleneck in CVQKD with crucial importance to the efficiency and protocol attributes. Post-processing uses the raw data of the parties generated by the quantum-level transmission and a classical authenticated channel to generate a secret key between the parties. The current reconciliation procedures require high-complexity coding with moderate resulting efficiency. Here we define an optimization method for post-processing in continuous-variable quantum key distribution. The reconciliation method achieves additive Gaussian noise on the random secret for arbitrarily low dimensional blocks. The model consumes all information from the raw data blocks to provide maximal efficiency and security via standard operations. The results can be realized by generic Gaussian coding schemes, allowing an easily implementation for experimental CVQKD protocols. © 2021 The Author(s) true 2021 true true true false true false NONE 2026-05-21 false 7 0 7 6 1 7 7 7 2 7 7 6 6 6 1 0 7 6 7 6 0 23 23 Folyóiratcikk Journal Article 24 7 Könyvrészlet Chapter in Book 25 0 Könyv Book 23 0 Egyéb konferenciaközlemény Conference paper 31 0 Egyéb konferenciakötet Conference proceedings 32 0 Oltalmi formák Protection forms 26 0 Disszertáció Thesis 28 0 Egyéb Miscellaneous 29 0 Alkotás Achievement 22 0 Kutatási adat Research data 33 0 Folyóiratcikk Journal Article 24 0 0 0 Könyvrészlet Chapter in Book 25 0 0 0 Könyv Book 23 0 0 0 Egyéb konferenciaközlemény Conference paper 31 0 0 0 Egyéb konferenciakötet Conference proceedings 32 0 0 0 Oltalmi formák Protection forms 26 0 0 0 Disszertáció Thesis 28 0 0 0 Egyéb Miscellaneous 29 0 0 0 Alkotás Achievement 22 0 0 0 Kutatási adat Research data 33 0 0 0 2022 0 1 1 1 1 2023 0 0 0 0 0 2024 0 0 0 0 0 2025 0 4 4 4 4 2026 0 2 1 2 1 Q2 false 10040623 false false false 2021-12-15T09:44:48.230+0000 Hálózati Rendszerek és Szolgáltatások Tanszék (BME / VIK) 1 7 1 1 0 true 10003133 Language 10002 /api/language/10002 Angol Angol English true 2 true PersonAuthorship 97470256 /api/authorship/97470256 L., Gyongyosi ✉ [Gyöngyösi, László (Informatika), szerző] Hálózati Rendszerek és Szolgáltatások Tanszék (BME / VIK) 1 1.0 true false true Author 10040623 /api/author/10040623 Gyöngyösi László (Informatika) Gyöngyösi László true 10040623 true L. Gyongyosi true false false AuthorshipType 1 /api/authorshiptype/1 Szerző 0 true 0 true false true PublicationIdentifier 19290630 /api/publicationidentifier/19290630 DOI: 10.1016/j.tcs.2021.08.023 PlainSource 6 /api/publicationsource/6 DOI PublicationSourceType 10001 /api/publicationsourcetype/10001 DOI true true true DOI DOI https://doi.org/@@@ true true 6 true IDENTICAL 10.1016/j.tcs.2021.08.023 https://doi.org/10.1016/j.tcs.2021.08.023 false true PublicationIdentifier 20250415 /api/publicationidentifier/20250415 WoS: 000710180500010 PlainSource 1 /api/publicationsource/1 WoS PublicationSourceType 10003 /api/publicationsourcetype/10003 Indexelő adatbázis false true true WoS WoS https://www.webofscience.com/wos/woscc/full-record/@@@ true true 1 true IDENTICAL 000710180500010 https://www.webofscience.com/wos/woscc/full-record/000710180500010 false true PublicationIdentifier 20250565 /api/publicationidentifier/20250565 Scopus: 85114686983 PlainSource 3 /api/publicationsource/3 Scopus PublicationSourceType 10003 /api/publicationsourcetype/10003 Indexelő adatbázis false true true Scopus Scopus http://www.scopus.com/record/display.url?origin=inward&eid=2-s2.0-@@@ true true 3 true IDENTICAL 85114686983 http://www.scopus.com/record/display.url?origin=inward&eid=2-s2.0-85114686983 false true PublicationIdentifier 19290631 /api/publicationidentifier/19290631 Egyéb URL: https://linkinghub.elsevier.com/retrieve/pii/S0304397521004941 PlainSource 40 /api/publicationsource/40 Egyéb URL PublicationSourceType 10006 /api/publicationsourcetype/10006 Link true true true Egyéb URL Other URL @@@ true true 40 true https://linkinghub.elsevier.com/retrieve/pii/S0304397521004941 https://linkinghub.elsevier.com/retrieve/pii/S0304397521004941 false true SjrRating 11204041 /api/sjrrating/11204041 sjr:Q2 (2021) Scopus - Computer Science (miscellaneous) THEORETICAL COMPUTER SCIENCE 0304-3975 1879-2294 85 0.49 journal RatingType 10002 /api/ratingtype/10002 sjr sjr true true ClassificationExternal 1701 /api/classificationexternal/1701 Scopus - Computer Science (miscellaneous) true 1701 true Q2 DIRECT true true Reference 23152833 /api/reference/23152833 1. 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(2021) THEORETICAL COMPUTER SCIENCE 0304-3975 1879-2294 893 146-158<div class="JournalArticle Publication long-list"> <div class="authors"> <img title="Forrásközlemény" style="float: left" src="/frontend/resources/grid/publication-core-icon.png"> <img title="Idézőközlemény" style="float: left" src="/frontend/resources/grid/publication-citation-icon.png"> <div class="autype autype0"> <span class="author-name" mtid="10040623"><a href="/gui2/?type=authors&mode=browse&sel=10040623" target="_blank">L. Gyongyosi ✉ (<span class="authorship-author-name">Gyöngyösi László</span> <span class="authorAux-mtmt"> Informatika</span>) </a> </span> <span class="author-affil"><span title="Budapesti Műszaki és Gazdaságtudományi Egyetem">BME</span>/<span title="Villamosmérnöki és Informatikai Kar">VIK</span>/Hálózati Rendszerek és Szolgáltatások Tanszék</span> </div> </div> <div class="title"><a href="/gui2/?mode=browse&params=publication;32204289" target="_blank">Post-processing optimization for continuous-variable quantum key distribution</a></div> <div> <span class="journal-title">THEORETICAL COMPUTER SCIENCE</span> <span class="journal-issn">(<a target="_blank" href="https://portal.issn.org/resource/ISSN/0304-3975">0304-3975</a> <a target="_blank" href="https://portal.issn.org/resource/ISSN/1879-2294">1879-2294</a>)</span>: <span class="journal-volume">893</span> <span class="page"> pp 146-158 </span> <span class="year">(2021)</span> </div> <div class="pub-footer"> <span class="language" xmlns="http://www.w3.org/1999/html">Nyelv: Angol | </span> <span class="identifiers"> <span class="id identifier oa_none" title="none"> <a style="color:blue" title="10.1016/j.tcs.2021.08.023" target="_blank" href="https://doi.org/10.1016/j.tcs.2021.08.023"> DOI </a> </span> <span class="id identifier oa_none" title="none"> <a style="color:blue" title="000710180500010" target="_blank" href="https://www.webofscience.com/wos/woscc/full-record/000710180500010"> WoS </a> </span> <span class="id identifier oa_none" title="none"> <a style="color:blue" title="85114686983" target="_blank" href="http://www.scopus.com/record/display.url?origin=inward&eid=2-s2.0-85114686983"> Scopus </a> </span> <span class="id identifier oa_none" title="none"> <a style="color:black" title="https://linkinghub.elsevier.com/retrieve/pii/S0304397521004941" target="_blank" href="https://linkinghub.elsevier.com/retrieve/pii/S0304397521004941"> Egyéb URL </a> </span> </span> <OnlyViewableByAuthor><div class="ratings"> <div class="journal-subject">Folyóirat szakterülete: Scopus - Computer Science (miscellaneous)&nbsp;&nbsp;&nbsp;SJR indikátor:&nbsp;Q2</div> <div class="journal-subject">Folyóirat szakterülete: Scopus - Theoretical Computer Science&nbsp;&nbsp;&nbsp;SJR indikátor:&nbsp;Q2</div> </div></OnlyViewableByAuthor> <div class="publication-citation" style="margin-left: 0.5cm;"> <span title="Nyilvános idézőközlemények összesen, említések nélkül" class="citingPub-count">Nyilvános idéző összesen: 7</span> | Független: 6 | Függő: 1 | Nem jelölt: 0 | WoS jelölt: 7 | Scopus jelölt:&nbsp;2 | WoS/Scopus jelölt:&nbsp;7 | DOI jelölt:&nbsp;7 </div> <div class="publication-citation"> <a target="_blank" href="/api/publication?cond=citations.related;eq;32204289&sort=publishedYear,desc&sort=title"> Idézett közlemények száma: 23 </a> </div> <div class="mtid"><span class="long-pub-mtid">Közlemény: 32204289</span> | <span class="status-data status-ADMIN_APPROVED"> Admin láttamozott </span> Forrás Idéző | <span class="type-subtype">Folyóiratcikk ( Szakcikk ) </span> | <span class="pub-category">Tudományos</span> | <span class="publication-sourceOfData">kézi felvitel</span> </div> <div class="notDuplums"><a target="_blank" href="/api/publication/32204289/notduplums">1 Nem duplumnak jelölés</a> </div> <div class="lastModified">Utolsó módosítás: 2024.05.22. 22:57 Boros Annamária (MTMT Központi admin) </div> <div class="lockedBy">Központi kezelésű 2024.05.27. 19:21 Boros Annamária (MTMT Központi admin) </div> <pre class="comment" style="margin-top: 0; margin-bottom: 0;"><u>Megjegyzés</u>: Department of Networked Systems and Services, Budapest University of Technology and Economics, Budapest, 1117, Hungary MTA-BME Information Systems Research Group, Hungarian Academy of Sciences, Budapest, 1051, Hungary Export Date: 2 December 2021 CODEN: TCSCD Correspondence Address: Gyongyosi, L.; De...</pre> </div></div>