Quantum-enhanced phase imaging without coincidence counting

A. Nicholas Black

doi:10.1364/OPTICA.482926

Quantum-enhanced phase imaging without coincidence counting

2023-07-19

10

OA

AI

DOI：10.1364/OPTICA.482926

Original

Original request for help

Save

Abstract

En 中文

Quantitative phase imaging provides a way to image transparent objects, such as biological cells, and measure their thickness. We report on a phase-imaging method that achieves twice the phase shift and approximately 1.7 times the spatial resolution of an equivalent spatially and temporally coherent classical quantitative phase-imaging system by using quantum interference between successive spontaneous parametric downconversion events in a nonlinear crystal. Furthermore, our method is approximately 1000 times faster than imaging the parametric downconversion photons in coincidence, which requires measurement times on the order of tens of hours. Our method may be useful for imaging sensitive transparent objects that require low illumination intensities at near-infrared and longer illumination wavelengths, such as photosensitive biological samples. (c) 2023 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement

Keywords:

MICROSCOPY

Quantum-enhanced phase imaging without coincidence counting

Abstract

Journal

Organization