Quantum non-Gaussian Depth of Single-Photon States

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F14%3A33150306" target="_blank" >RIV/61989592:15310/14:33150306 - isvavai.cz</a>
Result on the web
<a href="http://journals.aps.org/prl/pdf/10.1103/PhysRevLett.113.223603" target="_blank" >http://journals.aps.org/prl/pdf/10.1103/PhysRevLett.113.223603</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevLett.113.223603" target="_blank" >10.1103/PhysRevLett.113.223603</a>

Result language
angličtina
Original language name
Quantum non-Gaussian Depth of Single-Photon States
Original language description
We introduce and experimentally explore the concept of the non-Gaussian depth of single-photon states with a positiveWigner function. The depth measures the robustness of a single-photon state against optical losses. The directly witnessed quantum non-Gaussianity withstands significant attenuation, exhibiting a depth of 18 dB, while the nonclassicality remains unchanged. Quantum non-Gaussian depth is an experimentally approachable quantity that is much more robust than the negativity of the Wigner function. Furthermore, we use it to reveal significant differences between otherwise strongly nonclassical singlephoton sources.
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
BH - Optics, masers and lasers
OECD FORD branch
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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)<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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