Real applications of quantum imaging

TL;DR

This paper reviews mature quantum imaging protocols that leverage quantum properties like entanglement to surpass classical optical limits, highlighting their practical applications and experimental progress.

Contribution

It provides a comprehensive overview of the most developed quantum imaging techniques, emphasizing their real-world implementations and potential uses.

Findings

Quantum imaging protocols can surpass classical limits.

Several protocols have moved from theory to experimental demonstration.

Quantum imaging is now ready for practical applications.

Abstract

In the last years the possibility of creating and manipulating quantum states of light has paved the way to the development of new technologies exploiting peculiar properties of quantum states, as quantum information, quantum metrology & sensing, quantum imaging ... In particular Quantum Imaging addresses the possibility of overcoming limits of classical optics by using quantum resources as entanglement or sub-poissonian statistics. Albeit quantum imaging is a more recent field than other quantum technologies, e.g. quantum information, it is now substantially mature for application. Several different protocols have been proposed, some of them only theoretically, others with an experimental implementation and a few of them pointing to a clear application. Here we present a few of the most mature protocols ranging from ghost imaging to sub shot noise imaging and sub Rayleigh imaging.