Universal, Unambiguous Concentration and Distillation of Bell pairs
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F25%3A00387032" target="_blank" >RIV/68407700:21340/25:00387032 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1103/rcx1-w6j7" target="_blank" >https://doi.org/10.1103/rcx1-w6j7</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/rcx1-w6j7" target="_blank" >10.1103/rcx1-w6j7</a>
Alternative languages
Result language
angličtina
Original language name
Universal, Unambiguous Concentration and Distillation of Bell pairs
Original language description
The ability of preparing perfect Bell pairs with a practical scheme is of great relevance for quantum communication as well as distributed quantum computing. We propose a scheme which probabilistically, but universally and unambiguously produces the jΦþi Bell pair from four copies of qubit pairs initially in the same unknown pure quantum state. The same scheme, extended to eight qubit pairs initially in the same, moderately mixed quantum state, unambiguously produces the jΦþi Bell pair with quadratically suppressed noise. The core step of the proposed scheme consists of a pair of local two-qubit operations applied at each of the two distant locations, followed by a partial projective measurement and postselection at each party, with results communicated classically. While the scheme resembles standard entanglement distillation protocols, it achieves success within just three iterations, making it attractive for real-world applications.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10306 - Optics (including laser optics and quantum optics)
Result continuities
Project
<a href="/en/project/GA23-07169S" target="_blank" >GA23-07169S: Multipartite quantum dynamics on graphs and hypergraphs – theory and applications</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2025
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 LETTERS
ISSN
0031-9007
e-ISSN
1079-7114
Volume of the periodical
135
Issue of the periodical within the volume
26
Country of publishing house
US - UNITED STATES
Number of pages
6
Pages from-to
"260202-1"-"260202-6"
UT code for WoS article
001651967200007
EID of the result in the Scopus database
2-s2.0-105026654392