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arXiv · 1905.09357

Quantum phase-sensitive diffraction and imaging using entangled photons

Shahaf Asban·Konstantin E. Dorfman·Shaul Mukamel
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Abstract

We propose a novel quantum diffraction imaging technique whereby one photon of an entangled pair is diffracted off a sample and detected in coincidence with its twin. The image is obtained by scanning the photon that did not interact with matter. We show that when a dynamical quantum system interacts with an external field, the phase information is imprinted in the state of the field in a detectable way. The contribution to the signal from photons that interact with the sample scales as $\propto I_{p}^{1/2}$, where $I_{p}$ is the source intensity, compared to $\propto I_{p}$ of classical diffraction. This makes imaging with weak-field possible, avoiding damage to delicate samples. A Schmidt decomposition of the state of the field can be used for image enhancement by reweighting the Schmidt modes contributions.

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Shahaf Asban, Konstantin E. Dorfman, Shaul Mukamel. 2019-05-22. Quantum phase-sensitive diffraction and imaging using entangled photons. https://doi.org/10.1073/pnas.1904839116

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