Quantum Information, 2 Volume Set, 2nd Edition

37 Quantum Imaging

Claude Fabre and Nicolas Treps

Sorbonne Université, CNRS, ENS‐Université PSL, Collège de France 4 place Jussieu, 75252 Paris 05, France

37.1 Introduction

For more than two decades now, techniques have been designed and experimentally implemented enabling physicists to get rid of, or at least to reduce, quantum fluctuations in optical measurements. The same techniques lead also to the production of strong quantum correlations and entanglement in light. This domain has recently been successfully developed in the direction of quantum information processing and is presented extensively in the present book.

So far the quantum noise reduction, or the correlations, was effective when the total intensity of light beams ...