Complementarity reveals bound entanglement of two twisted photons

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F13%3A00072596" target="_blank" >RIV/00216224:14310/13:00072596 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1088/1367-2630/15/8/083036" target="_blank" >http://dx.doi.org/10.1088/1367-2630/15/8/083036</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1367-2630/15/8/083036" target="_blank" >10.1088/1367-2630/15/8/083036</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Complementarity reveals bound entanglement of two twisted photons

Popis výsledku v původním jazyce

We demonstrate the detection of bipartite bound entanglement as predicted by the Horodecki?s in 1998. Bound entangled states, being heavily mixed entangled quantum states, can be produced by incoherent addition of pure entangled states. Until 1998 it wasthought that such mixing could always be reversed by entanglement distillation; however, this turned out to be impossible for bound entangled states. The purest form of bound entanglement is that of only two particles, which requires higher-dimensional(d &gt; 2) quantum systems. We realize this using photon qutrit (d = 3) pairs produced by spontaneous parametric downconversion, that are entangled in the orbital angular momentum degrees of freedom, which is scalable to high dimensions. Entanglement ofthe photons is confirmed via a ´maximum complementarity protocol´. This conceptually simple protocol requires only maximized complementary of measurement bases; we show that it can also detect bound entanglement.

Název v anglickém jazyce

Complementarity reveals bound entanglement of two twisted photons

Popis výsledku anglicky

We demonstrate the detection of bipartite bound entanglement as predicted by the Horodecki?s in 1998. Bound entangled states, being heavily mixed entangled quantum states, can be produced by incoherent addition of pure entangled states. Until 1998 it wasthought that such mixing could always be reversed by entanglement distillation; however, this turned out to be impossible for bound entangled states. The purest form of bound entanglement is that of only two particles, which requires higher-dimensional(d &gt; 2) quantum systems. We realize this using photon qutrit (d = 3) pairs produced by spontaneous parametric downconversion, that are entangled in the orbital angular momentum degrees of freedom, which is scalable to high dimensions. Entanglement ofthe photons is confirmed via a ´maximum complementarity protocol´. This conceptually simple protocol requires only maximized complementary of measurement bases; we show that it can also detect bound entanglement.

Druh

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

CEP obor

BE - Teoretická fyzika

OECD FORD obor

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Projekt

—

Návaznosti

R - Projekt Ramcoveho programu EK

Rok uplatnění

2013

Kód důvěrnosti údajů

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

Název periodika

New Journal of Physics

ISSN

1367-2630

e-ISSN

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Svazek periodika

15

Číslo periodika v rámci svazku

083036

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

15

Strana od-do

1-15

Kód UT WoS článku

000323320400002

EID výsledku v databázi Scopus

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