Quantum imaging with undetected photons as ancilla-assisted process tomography

摘要

We show that how a recent experiment of quantum imaging with undetectedphotons can basically be described as a (partial) ancilla-assisted processtomography. 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 classicaland/or quantum correlations in imaging experiments.