Device-independent randomness amplification with a single device

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14330%2F14%3A00073817" target="_blank" >RIV/00216224:14330/14:00073817 - isvavai.cz</a>
Result on the web
<a href="http://www.sciencedirect.com/science/article/pii/S0375960114008032" target="_blank" >http://www.sciencedirect.com/science/article/pii/S0375960114008032</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.physleta.2014.08.007" target="_blank" >10.1016/j.physleta.2014.08.007</a>

Result language
angličtina
Original language name
Device-independent randomness amplification with a single device
Original language description
Expansion and amplification of weak randomness with untrusted quantum devices has recently become a very fruitful topic of research. Here we contribute with a procedure for amplifying a single weak random source using tri-partite GHZ-type entangled states. If the quality of the source reaches a fixed threshold R=log2 (10)R=log2 (10), perfect random bits can be produced. This technique can be used to extract randomness from sources that can't be extracted neither classically, nor by existing procedures developed for Santha?Vazirani sources. Our protocol works with a single fault-free device decomposable into three non-communicating parts, that is repeatedly reused throughout the amplification process.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
IN - Informatics
OECD FORD branch
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Project
<a href="/en/project/GAP202%2F12%2F1142" target="_blank" >GAP202/12/1142: Weak Sources of Entanglement and Randomness</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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