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Unveiling the Hanbury Brown and Twiss effect through Rényi entropy correlations

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JournalPhysica Scripta
DatePublished - 28 Mar 2013
Issue numberT153
Volume87
Original languageEnglish

Abstract

Adopting a quantum information perspective, we analyse the correlations in the thermal light beams used to demonstrate the Hanbury Brown and Twiss effect. We find that the total correlations measured by the Rényi mutual information match the normalized intensity correlations in the regime of low source intensity. Genuine quantum correlations in the form of discord are relevant in such regime but get washed out with increasing source intensity. This provides a new angle on the issue about the nature - quantum versus classical - of the effect.

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