Revealing the embedded phase in single pixel quantum ghost imaging

TL;DR

This paper presents a novel quantum ghost imaging technique that captures detailed phase information of objects using single pixel detectors and entangled photon pairs, enabling full phase profile reconstruction without ambiguity.

Contribution

The paper introduces a method to extract complete phase information of objects in quantum ghost imaging using digital projective masks, advancing phase imaging capabilities.

Findings

Successfully reconstructed phase profiles of objects with phase steps and gradients

Demonstrated full phase retrieval without ambiguity using two partial images

Validated the method experimentally with entangled photon pairs

Abstract

We outline and experimentally demonstrate a method to image pure phase objects using traditional quantum ghost imaging with single pixel detectors. We provide a theoretical description of the process, showing how phase information is embedded in the correlation measurements of spatially entangled photon pairs in which only one of the pair interacts with the object. Using pairs of digital projective masks, one amplitude-only and one phase-only, we reconstruct two partial phase images of the object. Using both these images, we can retrieve the full detailed phase profile of the object without ambiguity, which we demonstrate on objects exhibiting phase steps and gradients.