Transformations of symmetric multipartite Gaussian states by Gaussian local operations and classical communication

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F14%3A33149932" target="_blank" >RIV/61989592:15310/14:33149932 - isvavai.cz</a>

Výsledek na webu

<a href="http://journals.aps.org/pra/pdf/10.1103/PhysRevA.89.042331" target="_blank" >http://journals.aps.org/pra/pdf/10.1103/PhysRevA.89.042331</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevA.89.042331" target="_blank" >10.1103/PhysRevA.89.042331</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Transformations of symmetric multipartite Gaussian states by Gaussian local operations and classical communication

Popis výsledku v původním jazyce

Multipartite quantum correlations, in spite of years of intensive research, still leavemany questions unanswered. While bipartite entanglement is relatively well understood for Gaussian states, the complexity of mere qualitative characterization grows rapidly with increasing number of parties. Here, we present two schemes for transformations of multipartite permutation invariant Gaussian states by Gaussian local operations and classical communication. To this end, we use a scheme for possible experimental realization, making use of the fact that in this picture the whole N-partite state can be described by specifying the states of two separable modes. Numerically, we study entanglement transformations of tripartite states. Finally, we look at the effect our protocols have on fidelity of assisted quantum teleportation and find that, while adding correlated noise does not affect the fidelity at all, there is strong evidence that partial nondemolition measurement leads to a drop in telepo

Název v anglickém jazyce

Transformations of symmetric multipartite Gaussian states by Gaussian local operations and classical communication

Popis výsledku anglicky

Multipartite quantum correlations, in spite of years of intensive research, still leavemany questions unanswered. While bipartite entanglement is relatively well understood for Gaussian states, the complexity of mere qualitative characterization grows rapidly with increasing number of parties. Here, we present two schemes for transformations of multipartite permutation invariant Gaussian states by Gaussian local operations and classical communication. To this end, we use a scheme for possible experimental realization, making use of the fact that in this picture the whole N-partite state can be described by specifying the states of two separable modes. Numerically, we study entanglement transformations of tripartite states. Finally, we look at the effect our protocols have on fidelity of assisted quantum teleportation and find that, while adding correlated noise does not affect the fidelity at all, there is strong evidence that partial nondemolition measurement leads to a drop in telepo

Druh

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

CEP obor

BH - Optika, masery a lasery

OECD FORD obor

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Projekt

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

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2014

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

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Svazek periodika

89

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

8

Strana od-do

"042331-1"-"042331-8"

Kód UT WoS článku

000335227500002

EID výsledku v databázi Scopus

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