Method for universal detection of two-photon polarization entanglement
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F15%3A33154204" target="_blank" >RIV/61989592:15310/15:33154204 - isvavai.cz</a>
Result on the web
<a href="http://journals.aps.org/pra/pdf/10.1103/PhysRevA.91.032315" target="_blank" >http://journals.aps.org/pra/pdf/10.1103/PhysRevA.91.032315</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevA.91.032315" target="_blank" >10.1103/PhysRevA.91.032315</a>
Alternative languages
Result language
angličtina
Original language name
Method for universal detection of two-photon polarization entanglement
Original language description
Detecting and quantifying quantum entanglement of a given unknown state poses problems that are fundamentally important for quantum information processing. Surprisingly, no direct (i.e., without quantum tomography) universal experimental implementation of a necessary and sufficient test of entanglement has been designed even for a general two-qubit state. Here we propose an experimental method for detecting a collective universal witness, which is a necessary and sufficient test of two-photon polarization entanglement. It allows us to detect entanglement for any two-qubit mixed state and to establish tight upper and lower bounds on its amount. A different element of this method is the sequential character of its main components, which allows us to obtain relatively complicated information about quantum correlations with the help of simple linear-optical elements. As such, this proposal realizes a universal two-qubit entanglement test within the present state of the art of quantum optic
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BH - Optics, masers and lasers
OECD FORD branch
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Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review A
ISSN
1050-2947
e-ISSN
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Volume of the periodical
91
Issue of the periodical within the volume
3
Country of publishing house
US - UNITED STATES
Number of pages
7
Pages from-to
"032315-1"-"032315-7"
UT code for WoS article
000352074800001
EID of the result in the Scopus database
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