Localising two sub-diffraction emitters in 3D using quantum correlation microscopy

• URL: http://arxiv.org/abs/2310.02585v1
• Date: Wed, 4 Oct 2023 05:07:42 GMT
• Title: Localising two sub-diffraction emitters in 3D using quantum correlation microscopy
• Authors: Shuo Li, Wenchao Li, Qiang Sun, Bill Moran, Timothy C. Brown, Brant C. Gibson, Andrew D. Greentree
• Abstract summary: Quantum correlation microscopy provides diffraction-unlimited three-dimensional localisation for two emitters within a single diffraction-limited spot. Diffraction unlimited localisation is achieved using both intensity and photon correlation from Hanbury Brown and Twiss measurements at as few as four measurement locations.
• Score: 7.994006808120411
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The localisation of fluorophores is an important aspect of the determination of the biological function of cellular systems. Quantum correlation microscopy (QCM) is a promising technique for providing diffraction unlimited emitter localisation that can be used with either confocal or widefield modalities. However, so far, QCM has not been applied to three dimensional localisation problems. Here we show that quantum correlation microscopy provides diffraction-unlimited three-dimensional localisation for two emitters within a single diffraction-limited spot. By introducing a two-stage maximum likelihood estimator, our modelling shows that localisation precision scales as $1/\sqrt{t}$ where $t$ is the total detection time. Diffraction unlimited localisation is achieved using both intensity and photon correlation from Hanbury Brown and Twiss measurements at as few as four measurement locations.

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