Blind reconciliation
Information reconciliation is a crucial procedure in the classical post-processing of quantum key distribution (QKD). Poor reconciliation efficiency, revealing more information than strictly needed, may compromise the maximum attainable distance, while poor performance of the algorithm limits the pr...
| Autores: | , , |
|---|---|
| Tipo de recurso: | artículo |
| Fecha de publicación: | 2012 |
| País: | España |
| Institución: | Universidad Complutense de Madrid (UCM) |
| Repositorio: | Docta Complutense |
| Idioma: | inglés |
| OAI Identifier: | oai:docta.ucm.es:20.500.14352/44453 |
| Acceso en línea: | https://hdl.handle.net/20.500.14352/44453 |
| Access Level: | acceso abierto |
| Palabra clave: | 530.145 004 Quantum key distribution Information reconciliation Low-density parity-check codes Rate-compatible Interactive reconciliation Short-length codes Teoría de los quanta Informática (Informática) 2210.23 Teoría Cuántica 1203.17 Informática |
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Blind reconciliationMartínez Mateo, JesúsElkouss, DavidMartín, Vicente530.145004Quantum key distributionInformation reconciliationLow-density parity-check codesRate-compatibleInteractive reconciliationShort-length codesTeoría de los quantaInformática (Informática)2210.23 Teoría Cuántica1203.17 InformáticaInformation reconciliation is a crucial procedure in the classical post-processing of quantum key distribution (QKD). Poor reconciliation efficiency, revealing more information than strictly needed, may compromise the maximum attainable distance, while poor performance of the algorithm limits the practical throughput in a QKD device. Historically, reconciliation has been mainly done using close to minimal information disclosure but heavily interactive procedures, like Cascade, or using less efficient but also less interactive —just one message is exchanged— procedures, like the ones based in low-density parity-check (LDPC) codes. The price to pay in the LDPC case is that good efficiency is only attained for very long codes and in a very narrow range centered around the quantum bit error rate (QBER) that the code was designed to reconcile, thus forcing to have several codes if a broad range of QBER needs to be catered for. Real world implementations of these methods are thus very demanding, either on computational or communication resources or both, to the extent that the last generation of GHz clocked QKD systems are finding a bottleneck in the classical part. In order to produce compact, high performance and reliable QKD systems it would be highly desirable to remove these problems. Here we analyse the use of short-length LDPC codes in the information reconciliation context using a low interactivity, blind, protocol that avoids an a priori error rate estimation. We demonstrate that 2 × 10³ bits length LDPC codes are suitable for blind reconciliation. Such codes are of high interest in practice, since they can be used for hardware implementations with very high throughput.Rinton Press, IncorporatedUniversidad Complutense de Madrid20122012-09-0120122012-09-01journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/44453reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/444532026-06-02T12:44:21Z |
| dc.title.none.fl_str_mv |
Blind reconciliation |
| title |
Blind reconciliation |
| spellingShingle |
Blind reconciliation Martínez Mateo, Jesús 530.145 004 Quantum key distribution Information reconciliation Low-density parity-check codes Rate-compatible Interactive reconciliation Short-length codes Teoría de los quanta Informática (Informática) 2210.23 Teoría Cuántica 1203.17 Informática |
| title_short |
Blind reconciliation |
| title_full |
Blind reconciliation |
| title_fullStr |
Blind reconciliation |
| title_full_unstemmed |
Blind reconciliation |
| title_sort |
Blind reconciliation |
| dc.creator.none.fl_str_mv |
Martínez Mateo, Jesús Elkouss, David Martín, Vicente |
| author |
Martínez Mateo, Jesús |
| author_facet |
Martínez Mateo, Jesús Elkouss, David Martín, Vicente |
| author_role |
author |
| author2 |
Elkouss, David Martín, Vicente |
| author2_role |
author author |
| dc.contributor.none.fl_str_mv |
Universidad Complutense de Madrid |
| dc.subject.none.fl_str_mv |
530.145 004 Quantum key distribution Information reconciliation Low-density parity-check codes Rate-compatible Interactive reconciliation Short-length codes Teoría de los quanta Informática (Informática) 2210.23 Teoría Cuántica 1203.17 Informática |
| topic |
530.145 004 Quantum key distribution Information reconciliation Low-density parity-check codes Rate-compatible Interactive reconciliation Short-length codes Teoría de los quanta Informática (Informática) 2210.23 Teoría Cuántica 1203.17 Informática |
| description |
Information reconciliation is a crucial procedure in the classical post-processing of quantum key distribution (QKD). Poor reconciliation efficiency, revealing more information than strictly needed, may compromise the maximum attainable distance, while poor performance of the algorithm limits the practical throughput in a QKD device. Historically, reconciliation has been mainly done using close to minimal information disclosure but heavily interactive procedures, like Cascade, or using less efficient but also less interactive —just one message is exchanged— procedures, like the ones based in low-density parity-check (LDPC) codes. The price to pay in the LDPC case is that good efficiency is only attained for very long codes and in a very narrow range centered around the quantum bit error rate (QBER) that the code was designed to reconcile, thus forcing to have several codes if a broad range of QBER needs to be catered for. Real world implementations of these methods are thus very demanding, either on computational or communication resources or both, to the extent that the last generation of GHz clocked QKD systems are finding a bottleneck in the classical part. In order to produce compact, high performance and reliable QKD systems it would be highly desirable to remove these problems. Here we analyse the use of short-length LDPC codes in the information reconciliation context using a low interactivity, blind, protocol that avoids an a priori error rate estimation. We demonstrate that 2 × 10³ bits length LDPC codes are suitable for blind reconciliation. Such codes are of high interest in practice, since they can be used for hardware implementations with very high throughput. |
| publishDate |
2012 |
| dc.date.none.fl_str_mv |
2012 2012-09-01 2012 2012-09-01 |
| dc.type.none.fl_str_mv |
journal article http://purl.org/coar/resource_type/c_6501 |
| dc.type.openaire.fl_str_mv |
info:eu-repo/semantics/article |
| format |
article |
| dc.identifier.none.fl_str_mv |
https://hdl.handle.net/20.500.14352/44453 |
| url |
https://hdl.handle.net/20.500.14352/44453 |
| dc.language.none.fl_str_mv |
Inglés eng |
| language_invalid_str_mv |
Inglés |
| language |
eng |
| dc.rights.none.fl_str_mv |
open access http://purl.org/coar/access_right/c_abf2 |
| dc.rights.openaire.fl_str_mv |
info:eu-repo/semantics/openAccess |
| rights_invalid_str_mv |
open access http://purl.org/coar/access_right/c_abf2 |
| eu_rights_str_mv |
openAccess |
| dc.format.none.fl_str_mv |
application/pdf |
| dc.publisher.none.fl_str_mv |
Rinton Press, Incorporated |
| publisher.none.fl_str_mv |
Rinton Press, Incorporated |
| dc.source.none.fl_str_mv |
reponame:Docta Complutense instname:Universidad Complutense de Madrid (UCM) |
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Universidad Complutense de Madrid (UCM) |
| reponame_str |
Docta Complutense |
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Docta Complutense |
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1869410119000784896 |
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15,300719 |