Quantum imaging with undetected photons as ancilla-assisted process tomography

TL;DR

This paper demonstrates that quantum imaging with undetected photons can be understood as ancilla-assisted process tomography, providing a simplified circuit model and insights into the role of correlations in quantum imaging.

Contribution

It introduces a simplified quantum circuit framework for quantum imaging with undetected photons, linking it to process tomography and quantum computation.

Findings

Quantum imaging with undetected photons can be modeled as ancilla-assisted process tomography.

A simplified quantum circuit version of the imaging scenario is proposed.

The analysis clarifies the role of classical and quantum correlations in imaging.

Abstract

We show that how a recent experiment of quantum imaging with undetected photons can basically be described as a (partial) ancilla-assisted process tomography. We propose a simplified quantum circuit version of this scenario, which also enables to recast quantum imaging in quantum computation language. Our analogy and analysis may help better understand the role of classical and/or quantum correlations in imaging experiments.