Embedding quantum and random optics in a larger field theory

TL;DR

This paper extends quantum optics by incorporating negative frequency components, creating a unified framework that includes both quantum and classical random field optics.

Contribution

It introduces creation and annihilation operators for negative frequencies, expanding the algebra of local observables in quantum optics.

Findings

Unified framework for quantum and classical optics

Extension of algebra of local observables

Inclusion of negative frequency components

Abstract

Introducing creation and annihilation operators for negative frequency components extends the algebra of smeared local observables of quantum optics to include an associated classical random field optics.