Protocols and quantum circuits for implementing entanglement concentration in cat state, GHZ-like state and nine families of 4-qubit entangled states

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F15%3A33154404" target="_blank" >RIV/61989592:15310/15:33154404 - isvavai.cz</a>

Výsledek na webu

<a href="http://link.springer.com/article/10.1007%2Fs11128-015-0948-6" target="_blank" >http://link.springer.com/article/10.1007%2Fs11128-015-0948-6</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s11128-015-0948-6" target="_blank" >10.1007/s11128-015-0948-6</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Protocols and quantum circuits for implementing entanglement concentration in cat state, GHZ-like state and nine families of 4-qubit entangled states

Popis výsledku v původním jazyce

Three entanglement concentration protocols (ECPs) are proposed. The first ECP and a modified version of that are shown to be useful for the creation of maximally entangled cat and GHZ-like states from their non-maximally entangled counterparts. The lasttwo ECPs are designed for the creation of maximally entangled (n + 1)-qubit state 1/root 2 (vertical bar Psi(0)>vertical bar 0 > + vertical bar Psi(1)>vertical bar 1 >) from the partially entangled (n + 1)-qubit normalized state alpha vertical bar Psi(0)>vertical bar(0)> + beta vertical bar Psi(1)>vertical bar 1 >, where <Psi(1)vertical bar Psi(0)> = 0 and vertical bar alpha vertical bar not equal 1/root 2. It is also shown that W, GHZ, GHZ-like, Bell and cat states and specific states from the nine SLOCC-nonequivalent families of 4-qubit entangled states can be expressed as 1/root 2 (vertical bar Psi(0)>vertical bar 0 > + vertical bar Psi(1)>vertical bar 1 >), and consequently, the last two ECPs proposed here are applicable to all thes

Název v anglickém jazyce

Protocols and quantum circuits for implementing entanglement concentration in cat state, GHZ-like state and nine families of 4-qubit entangled states

Popis výsledku anglicky

Three entanglement concentration protocols (ECPs) are proposed. The first ECP and a modified version of that are shown to be useful for the creation of maximally entangled cat and GHZ-like states from their non-maximally entangled counterparts. The lasttwo ECPs are designed for the creation of maximally entangled (n + 1)-qubit state 1/root 2 (vertical bar Psi(0)>vertical bar 0 > + vertical bar Psi(1)>vertical bar 1 >) from the partially entangled (n + 1)-qubit normalized state alpha vertical bar Psi(0)>vertical bar(0)> + beta vertical bar Psi(1)>vertical bar 1 >, where <Psi(1)vertical bar Psi(0)> = 0 and vertical bar alpha vertical bar not equal 1/root 2. It is also shown that W, GHZ, GHZ-like, Bell and cat states and specific states from the nine SLOCC-nonequivalent families of 4-qubit entangled states can be expressed as 1/root 2 (vertical bar Psi(0)>vertical bar 0 > + vertical bar Psi(1)>vertical bar 1 >), and consequently, the last two ECPs proposed here are applicable to all thes

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

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

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

Quantum Information Processing

ISSN

1570-0755

e-ISSN

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Svazek periodika

14

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

23

Strana od-do

2077-2099

Kód UT WoS článku

000355264700024

EID výsledku v databázi Scopus

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