Squeezing-enhanced quantum key distribution over atmospheric channels
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F20%3A73600920" target="_blank" >RIV/61989592:15310/20:73600920 - isvavai.cz</a>
Result on the web
<a href="https://iopscience.iop.org/article/10.1088/1367-2630/ab7f8f/pdf" target="_blank" >https://iopscience.iop.org/article/10.1088/1367-2630/ab7f8f/pdf</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/1367-2630/ab7f8f" target="_blank" >10.1088/1367-2630/ab7f8f</a>
Alternative languages
Result language
angličtina
Original language name
Squeezing-enhanced quantum key distribution over atmospheric channels
Original language description
We propose the Gaussian continuous-variable quantum key distribution using squeezed states in the composite channels including atmospheric propagation with transmittance fluctuations. We show that adjustments of signal modulation and use of optimal feasible squeezing can be sufficient to significantly overcome the coherent-state protocol and drastically improve the performance of quantum key distribution in atmospheric channels, also in the presence of additional attenuating and noisy channels. Furthermore, we consider examples of atmospheric links of different lengths, and show that optimization of both squeezing and modulation is crucial for reduction of protocol downtime and increase of secure atmospheric channel distance. Our results demonstrate unexpected advantage of fragile squeezed states of light in the free-space quantum key distribution applicable in daylight and stable against atmospheric turbulence.
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
10306 - Optics (including laser optics and quantum optics)
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
NEW JOURNAL OF PHYSICS
ISSN
1367-2630
e-ISSN
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Volume of the periodical
22
Issue of the periodical within the volume
5
Country of publishing house
GB - UNITED KINGDOM
Number of pages
10
Pages from-to
"053006-1"-"053006-10"
UT code for WoS article
000532419200001
EID of the result in the Scopus database
2-s2.0-85085706716