Coarse-grained quantum state estimation for noisy measurements
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F13%3A33144341" target="_blank" >RIV/61989592:15310/13:33144341 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1103/PhysRevA.88.022111" target="_blank" >http://dx.doi.org/10.1103/PhysRevA.88.022111</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevA.88.022111" target="_blank" >10.1103/PhysRevA.88.022111</a>
Alternative languages
Result language
angličtina
Original language name
Coarse-grained quantum state estimation for noisy measurements
Original language description
We introduce a numerical coarse-graining scheme to reliably estimate the quantum state of a source given a set of noisy measurement outcomes that are not well calibrated. This scheme requires no additional knowledge or assumptions about the structures ofthe noisy outcomes and is, thus, applicable for very general tomography experiments with arbitrary noise perturbations. Further, this scheme involves an optimization procedure that is straightforward to implement and can readily be extended to any number of ill-calibrated noisy outcomes in a measurement setup. Compared with the standard estimation strategy where noise is neglected, coarse graining performed on simulated and experimental data for two-qubit quantum states and on simulated data from continuous-variable tomography shows that this scheme can significantly improve the accuracies of state estimators for noise levels ranging from low to moderately high values.
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
2013
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
88
Issue of the periodical within the volume
2
Country of publishing house
US - UNITED STATES
Number of pages
8
Pages from-to
"022111-1"-"022111-8"
UT code for WoS article
000323152700002
EID of the result in the Scopus database
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