Środowiskowe Seminarium z Informacji i Technologii Kwantowych
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2021-04-22 (11:15) 
Stanisław Kurdziałek (IFT UW)
Back to sources—the role of coherence in super-resolution imaging revisited
Zoom link: https://zoom.us/j/6526721604?pwd=Y0pPdE9vT1hNWWNiZVBMaEVOeHN2dz09
The fundamental limit on the precision of the separation estimation between two partially coherent sources is derived. Photon losses, inevitably associated with imperfect imaging, are properly taken into account. We begin our analysis with a simple and common imaging model based on the 4f system. We then show that our results are valid for any passive, linear, translationally invariant optical imaging system. We obtain the expression for the Quantum Fisher Information, which is consistent with the already computed classical Fisher Information and latest experimental work. We also identify the source of discrepancies in the results obtained earlier and show how to correctly interpret them
The fundamental limit on the precision of the separation estimation between two partially coherent sources is derived. Photon losses, inevitably associated with imperfect imaging, are properly taken into account. We begin our analysis with a simple and common imaging model based on the 4f system. We then show that our results are valid for any passive, linear, translationally invariant optical imaging system. We obtain the expression for the Quantum Fisher Information, which is consistent with the already computed classical Fisher Information and latest experimental work. We also identify the source of discrepancies in the results obtained earlier and show how to correctly interpret them