Gaussian Intrinsic Entanglement
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F16%3A33160271" target="_blank" >RIV/61989592:15310/16:33160271 - isvavai.cz</a>
Result on the web
<a href="http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.117.240505#fulltext" target="_blank" >http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.117.240505#fulltext</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevLett.117.240505" target="_blank" >10.1103/PhysRevLett.117.240505</a>
Alternative languages
Result language
angličtina
Original language name
Gaussian Intrinsic Entanglement
Original language description
We introduce a cryptographically motivated quantifier of entanglement in bipartite Gaussian systems called Gaussian intrinsic entanglement (GIE). The GIE is defined as the optimized mutual information of a Gaussian distribution of outcomes of measurements on parts of a system, conditioned on the outcomes of a measurement on a purifying subsystem. We show that GIE vanishes only on separable states and exhibits monotonicity under Gaussian local trace-preserving operations and classical communication. In the twomode case, we compute GIE for all pure states as well as for several important classes of symmetric and asymmetric mixed states. Surprisingly, in all of these cases, GIE is equal to Gaussian Rényi-2 entanglement. As GIE is operationally associated with the secret-key agreement protocol and can be computed for several important classes of states, it offers a compromise between computable and physically meaningful entanglement quantifiers.
Czech name
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Czech description
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Classification
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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Result continuities
Project
<a href="/en/project/GAP205%2F12%2F0694" target="_blank" >GAP205/12/0694: Complex quantum correlations and their applications</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review Letters
ISSN
0031-9007
e-ISSN
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Volume of the periodical
117
Issue of the periodical within the volume
24
Country of publishing house
US - UNITED STATES
Number of pages
6
Pages from-to
"240505-1"-"240505-6"
UT code for WoS article
000389507000002
EID of the result in the Scopus database
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