Advances in quantum imaging

TL;DR

This paper reviews recent developments in quantum imaging technologies, emphasizing non-classical light sources like entangled photons and squeezed light, and explores their potential to surpass classical imaging limits and reveal previously invisible details.

Contribution

It provides a comprehensive overview of recent quantum imaging systems, highlighting the role of non-classical light sources and discussing future trends and challenges.

Findings

Quantum sources enable imaging beyond classical limits

Non-classical light can reveal previously invisible details

Emerging quantum techniques offer new imaging capabilities

Abstract

Modern imaging technologies are widely based on classical principles of light or electromagnetic wave propagation. They can be remarkably sophisticated, with recent successes ranging from single molecule microscopy to imaging far-distant galaxies. However, new imaging technologies based on quantum principles are gradually emerging. They can either surpass classical approaches or provide novel imaging capabilities that would not otherwise be possible. {Here }we provide an overview {of the most recently developed quantum imaging systems, highlighting the non-classical properties of sources such as bright squeezed light, entangled photons, and single-photon emitters that enable their functionality.} We outline potential upcoming trends and the associated challenges, all driven by a central inquiry, which is to understand whether quantum light can make visible the invisible.