Gaussian intrinsic entanglement: An entanglement quantifier based on secret correlations

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

Gaussian intrinsic entanglement: An entanglement quantifier based on secret correlations

Popis výsledku v původním jazyce

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

Název v anglickém jazyce

Gaussian intrinsic entanglement: An entanglement quantifier based on secret correlations

Popis výsledku anglicky

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

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BH - Optika, masery a lasery

OECD FORD obor

—

Projekt

<a href="/cs/project/GAP205%2F12%2F0694" target="_blank" >GAP205/12/0694: Komplexní kvantové korelace a jejich aplikace</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

Physical Review A

ISSN

1050-2947

e-ISSN

—

Svazek periodika

91

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

21

Strana od-do

"062313-1"-"062313-21"

Kód UT WoS článku

000355965600005

EID výsledku v databázi Scopus

—