Multiparameter quantum metrology of incoherent point sources: Towards realistic superresolution
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F17%3A73582696" target="_blank" >RIV/61989592:15310/17:73582696 - isvavai.cz</a>
Result on the web
<a href="https://journals.aps.org/pra/pdf/10.1103/PhysRevA.96.062107" target="_blank" >https://journals.aps.org/pra/pdf/10.1103/PhysRevA.96.062107</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevA.96.062107" target="_blank" >10.1103/PhysRevA.96.062107</a>
Alternative languages
Result language
angličtina
Original language name
Multiparameter quantum metrology of incoherent point sources: Towards realistic superresolution
Original language description
We establish the multiparameter quantum Cramér-Rao bound for simultaneously estimating the centroid, the separation, and the relative intensities of two incoherent optical point sources using a linear imaging system. For equally bright sources, the Cramér-Rao bound is independent of their separation, which confirms that the Rayleigh resolution limit is just an artifact of the conventional direct imaging and can be overcome with an adequate strategy. For the general case of unequally bright sources, the amount of information one can gain about the separation falls to zero, but we show that there is always a quadratic improvement in an optimal detection in comparison with the intensity measurements. This advantage can be of utmost importance in realistic scenarios, such as observational astronomy.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10306 - Optics (including laser optics and quantum optics)
Result continuities
Project
<a href="/en/project/GA15-03194S" target="_blank" >GA15-03194S: Informationally complete observations for information processing with random light</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2017
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
2469-9926
e-ISSN
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Volume of the periodical
96
Issue of the periodical within the volume
6
Country of publishing house
US - UNITED STATES
Number of pages
7
Pages from-to
"062107-1"-"062107-7"
UT code for WoS article
000417471100001
EID of the result in the Scopus database
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