Practical device-independent quantum cryptography via entropy accumulation
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14330%2F18%3A00106877" target="_blank" >RIV/00216224:14330/18:00106877 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1038/s41467-017-02307-4" target="_blank" >http://dx.doi.org/10.1038/s41467-017-02307-4</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1038/s41467-017-02307-4" target="_blank" >10.1038/s41467-017-02307-4</a>
Alternative languages
Result language
angličtina
Original language name
Practical device-independent quantum cryptography via entropy accumulation
Original language description
Device-independent cryptography goes beyond conventional quantum cryptography by providing security that holds independently of the quality of the underlying physical devices. Device-independent protocols are based on the quantum phenomena of non-locality and the violation of Bell inequalities. This high level of security could so far only be established under conditions which are not achievable experimentally. Here we present a property of entropy, termed "entropy accumulation", which asserts that the total amount of entropy of a large system is the sum of its parts. We use this property to prove the security of cryptographic protocols, including device-independent quantum key distribution, while achieving essentially optimal parameters. Recent experimental progress, which enabled loophole-free Bell tests, suggests that the achieved parameters are technologically accessible. Our work hence provides the theoretical groundwork for experimental demonstrations of device-independent cryptography.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10201 - Computer sciences, information science, bioinformathics (hardware development to be 2.2, social aspect to be 5.8)
Result continuities
Project
<a href="/en/project/GA16-22211S" target="_blank" >GA16-22211S: Rényi entropies in quantum information processing</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Nature Communications
ISSN
2041-1723
e-ISSN
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Volume of the periodical
9
Issue of the periodical within the volume
Jan
Country of publishing house
US - UNITED STATES
Number of pages
11
Pages from-to
1-11
UT code for WoS article
000423674100015
EID of the result in the Scopus database
2-s2.0-85041291448