Nonclassicality Invariant of General Two-Mode Gaussian States

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F16%3A33159253" target="_blank" >RIV/61989592:15310/16:33159253 - isvavai.cz</a>
Result on the web
<a href="http://www.nature.com/articles/srep26523" target="_blank" >http://www.nature.com/articles/srep26523</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1038/srep26523" target="_blank" >10.1038/srep26523</a>

Result language
angličtina
Original language name
Nonclassicality Invariant of General Two-Mode Gaussian States
Original language description
We introduce a new quantity for describing nonclassicality of an arbitrary optical two-mode Gaussian state which remains invariant under any global photon-number preserving unitary transformation of the covariance matrix of the state. The invariant naturally splits into an entanglement monotone and local-nonclassicality quantifiers applied to the reduced states. This shows how entanglement can be converted into local squeezing and vice versa. Twin beams and their transformations at a beam splitter are analyzed as an example providing squeezed light. An extension of this approach to pure three-mode Gaussian states is given.
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)

Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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