Optimal observables and estimators for practical superresolution imaging
arXiv:2102.05611 · doi:10.1103/PhysRevLett.127.123604
Abstract
Recent works identified resolution limits for the distance between incoherent point sources. However, it remains unclear how to choose suitable observables and estimators to reach these limits in practical situations. Here, we show how estimators saturating the Cramér-Rao bound for the distance between two thermal point sources can be constructed using an optimally designed observable in the presence of practical imperfections, such as misalignment, crosstalk and detector noise.
arXiv comment6 pages, 4 figures. Comments are welcome
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