Quantum randomness protected against detection loophole attacksShow others and affiliations
2021 (English)In: Quantum Information Processing, ISSN 1570-0755, E-ISSN 1573-1332, Vol. 20, no 1, article id 39Article in journal (Refereed) Published
Abstract [en]
Device and semi-device-independent private quantum randomness generators are crucial for applications requiring private randomness. However, they are vulnerable to detection inefficiency attacks and this limits severely their usage for practical purposes. Here, we present a method for protecting semi-device-independent private quantum randomness generators in prepare-and-measure scenarios against detection inefficiency attacks. The key idea is the introduction of a blocking device that adds failures in the communication between the preparation and measurement devices. We prove that, for any detection efficiency, there is a blocking rate that provides protection against these attacks. We experimentally demonstrate the generation of private randomness using weak coherent states and standard avalanche photo-detectors.
Place, publisher, year, edition, pages
SPRINGER , 2021. Vol. 20, no 1, article id 39
Keywords [en]
Detection efficiency; Quantum random number generation
National Category
Condensed Matter Physics
Identifiers
URN: urn:nbn:se:liu:diva-173403DOI: 10.1007/s11128-020-02948-3ISI: 000611984700004OAI: oai:DiVA.org:liu-173403DiVA, id: diva2:1529986
Note
Funding Agencies|FondecytComision Nacional de Investigacion Cientifica y Tecnologica (CONICYT)CONICYT FONDECYT [1200859, 1190933, 1190901, 1150101, 3170307]; ANID-Millennium Science Initiative Program [ICN17_012]; Ministry of Science, Innovation and Universities (MICIU) [FIS2017-89609-P]; FEDER funds, the Conserjeria de Conocimiento, Investigacion y Universidad, Junta de Andalucia; European Regional Development Fund (ERDF)European Union (EU) [SOMM17/6105/UGR]; Knut and Alice Wallenberg Foundation project "Photonic Quantum Information"; Ceniit Linkoping University; Swedish Research CouncilSwedish Research Council [VR 2017-04470]; National Science Centre (NCN)National Science Center, PolandNational Science Centre, Poland [2014/14/E/ST2/00020]; FNP programme First TEAM [First TEAM/2016-1/5]; DS Programs of the Faculty of Electronics, Telecommunications and Informatics, Gdask University of Technology; Foundation for Polish ScienceFoundation for Polish Science; EUEuropean Union (EU) [2018/MAB/5]; [ANID/REC/PAI77190088]
2021-02-202021-02-202021-02-20