Cloning the entanglement of a pair of quantum bits

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F04%3A00002373" target="_blank" >RIV/61989592:15310/04:00002373 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Cloning the entanglement of a pair of quantum bits

Original language description

It is shown that any quantum operation that perfectly clones the entanglement of all maximally entangled qubit pairs cannot preserve separability. This "entanglement no-cloning" principle naturally suggests that some approximate cloning of entanglement is nevertheless allowed by quantum mechanics. We investigate a separability-preserving optimal cloning machine that duplicates all maximally entangled states of two qubits, resulting in 0.285 bits of entanglement per clone, while a local cloning machine only yields 0.060 bits of entanglement per clone.

Czech name

Kopírování provázanosti páru kvantových bitů

Czech description

V článku je ukázáno kopírování provázanosti páru kvantových bitů.

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/LN00A015" target="_blank" >LN00A015: Research center for optics</a><br>

Continuities

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

Publication year

2004

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

69

Issue of the periodical within the volume

4

Country of publishing house

US - UNITED STATES

Number of pages

822

Pages from-to

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UT code for WoS article

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EID of the result in the Scopus database

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