Quantum enhanced non-interferometric quantitative phase imaging.

Autor: Ortolano G; Quantum Metrology and Nano Technology Division, INRiM, Strada delle Cacce 91, 10135, Torino, Italy. g.ortolano@inrim.it.; DISAT, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129, Torino, Italy. g.ortolano@inrim.it., Paniate A; Quantum Metrology and Nano Technology Division, INRiM, Strada delle Cacce 91, 10135, Torino, Italy.; DISAT, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129, Torino, Italy., Boucher P; Quantum Metrology and Nano Technology Division, INRiM, Strada delle Cacce 91, 10135, Torino, Italy., Napoli C; Quantum Metrology and Nano Technology Division, INRiM, Strada delle Cacce 91, 10135, Torino, Italy., Soman S; Imaging Physics Department Optics Research Group, Faculty of Applied Sciences, Delft University of Technology, Lorentzweg 1, 2628CJ, Delft, The Netherlands., Pereira SF; Imaging Physics Department Optics Research Group, Faculty of Applied Sciences, Delft University of Technology, Lorentzweg 1, 2628CJ, Delft, The Netherlands., Ruo-Berchera I; Quantum Metrology and Nano Technology Division, INRiM, Strada delle Cacce 91, 10135, Torino, Italy., Genovese M; Quantum Metrology and Nano Technology Division, INRiM, Strada delle Cacce 91, 10135, Torino, Italy.
Jazyk: angličtina
Zdroj: Light, science & applications [Light Sci Appl] 2023 Jul 11; Vol. 12 (1), pp. 171. Date of Electronic Publication: 2023 Jul 11.
DOI: 10.1038/s41377-023-01215-1
Abstrakt: Quantum entanglement and squeezing have significantly improved phase estimation and imaging in interferometric settings beyond the classical limits. However, for a wide class of non-interferometric phase imaging/retrieval methods vastly used in the classical domain, e.g., ptychography and diffractive imaging, a demonstration of quantum advantage is still missing. Here, we fill this gap by exploiting entanglement to enhance imaging of a pure phase object in a non-interferometric setting, only measuring the phase effect on the free-propagating field. This method, based on the so-called "transport of intensity equation", is quantitative since it provides the absolute value of the phase without prior knowledge of the object and operates in wide-field mode, so it does not need time-consuming raster scanning. Moreover, it does not require spatial and temporal coherence of the incident light. Besides a general improvement of the image quality at a fixed number of photons irradiated through the object, resulting in better discrimination of small details, we demonstrate a clear reduction of the uncertainty in the quantitative phase estimation. Although we provide an experimental demonstration of a specific scheme in the visible spectrum, this research also paves the way for applications at different wavelengths, e.g., X-ray imaging, where reducing the photon dose is of utmost importance.
(© 2023. The Author(s).)
Databáze: MEDLINE
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