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Journal of Physics B Atomic Molecular and Optical Physics

A simple study of photon correlations from Hanbury-Brown and Twiss to Einstein, Podolsky, Rosen and beyond

Roy J. Glauber, M. Kleber, Anil K. Patnaik, Marlan O. Scully, HERBERT WALTHER

Published Apr 25, 2005• 3 citations
Publisher

Abstract

We present a detailed, (hopefully) pedagogical, analysis of amplitude and intensity correlations from two two-level atoms. We discuss various schemes to examine interference in scattering from two two-level systems, both with semiclassical treatment and quantum mechanical treatment. We show realization of quantum eraser and subensemble sorting in two different schemes of two two-level systems. We also show how the two-photon correlation can be useful in quantum imaging.

DOI
10.1088/0953-4075/38/9/005

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We present a detailed, (hopefully) pedagogical, analysis of amplitude and intensity correlations from two two-level atoms. We discuss various schemes to examine interference in scattering from two two-level systems, both with semiclassical treatment and quantum mechanical treatment. We show realization of quantum eraser and subensemble sorting in two different schemes of two two-level systems. We also show how the two-photon correlation can be useful in quantum imaging.
Two-photon correlation phenomena of chaotic light, including the historical Hanbury Brown and Twiss effect, are essentially quantum effect of two-photon interference, instead of classical statistical correlation between intensity fluctuations. To support our view, we analyze a "ghost" imaging experiment with chaotic light for which the classical understanding does not give a satisfactory interpretation. We also provide a two-photon optical picture of ghost imaging with chaotic light in terms of two-photon phase-conjugate mirror which suggests lensless imaging applications for radiations for which no effective lens is available.
We present a quantum two-photon interference approach to two-photon correlation phenomena of chaotic light, including the historical experiment of Hanbury Brown and Twiss. We argue against the interpretation of such phenomena in terms of a classical statistical correlation between intensity fluctuations. To support our view, we show a ‘ghost’ imaging experiment with chaotic light for which the classical understanding does not give a satisfactory interpretation. We also provide a two-photon optical picture of ghost imaging with chaotic light in terms of two-photon phase-conjugate mirrors which is very advantageous because it yields lensless two-photon imaging, suggesting imaging applications for radiations for which no effective lens is available.