Gaussian intrinsic entanglement: An entanglement quantifier based on secret correlations

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F15%3A33154632" target="_blank" >RIV/61989592:15310/15:33154632 - isvavai.cz</a>

Result on the web

<a href="http://journals.aps.org/pra/pdf/10.1103/PhysRevA.91.062313" target="_blank" >http://journals.aps.org/pra/pdf/10.1103/PhysRevA.91.062313</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevA.91.062313" target="_blank" >10.1103/PhysRevA.91.062313</a>

Result language

angličtina

Original language name

Gaussian intrinsic entanglement: An entanglement quantifier based on secret correlations

Original language description

ntrinsic entanglement (IE) is a quantity which aims at quantifying bipartite entanglement carried by a quantum state as an optimal amount of the intrinsic information that can be extracted from the state by measurement. We investigate in detail the properties of a Gaussian version of IE, the so-called Gaussian intrinsic entanglement (GIE). We show explicitly how GIE simplifies to the mutual information of a distribution of outcomes of measurements on a conditional state obtained by a measurement on a purifying subsystem of the analyzed state, which is first minimized over all measurements on the purifying subsystem and then maximized over all measurements on the conditional state. By constructing for any separable Gaussian state a purification and a measurement on the purifying subsystem which projects the purification onto a product state, we prove that GIE Ivanishes on all Gaussian separable states. Via realization of quantum operations by teleportation, we further show that GIE is n

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BH - Optics, masers and lasers

OECD FORD branch

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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)

Publication year

2015

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Physical Review A

ISSN

1050-2947

e-ISSN

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Volume of the periodical

91

Issue of the periodical within the volume

6

Country of publishing house

US - UNITED STATES

Number of pages

21

Pages from-to

"062313-1"-"062313-21"

UT code for WoS article

000355965600005

EID of the result in the Scopus database

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