Quantum theory of an electromagnetic observer: Classically behaving macroscopic systems and the emergence of the classical world in quantum electrodynamics

L. I. Plimak, Misha Ivanov, A. Aiello, S. Stenholm

Research output: Contribution to journalArticleScientificpeer-review

Abstract

Quantum electrodynamics under conditions of distinguishability of interacting matter entities, and of controlled actions and back-actions between them, is considered. Such "mesoscopic quantum electrodynamics" is shown to share its dynamical structure with the classical stochastic electrodynamics. In formal terms, we demonstrate that all general relations of the mesoscopic quantum electrodynamics may be recast in a form lacking Planck's constant. Mesoscopic quantum electrodynamics is therefore subject to "doing quantum electrodynamics while thinking classically," allowing one to substitute essentially classical considerations for quantum ones without any loss in generality. Implications of these results for the quantum measurement theory are discussed.

Original languageEnglish
Article number022122
JournalPhysical Review A
Volume92
Issue number2
DOIs
Publication statusPublished - 25 Aug 2015
MoE publication typeA1 Journal article-refereed

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