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Spatial interference between pairs of disjoint optical paths with a single chaotic source

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We demonstrate a novel second-order spatial interference effect between two indistinguishable pairs of disjoint optical paths from a single chaotic source. Beside providing a deeper understanding of the physics of multi-photon interference and coherence, the effect enables retrieving information on both the spatial structure and the relative position of two distant double-pinhole masks, in the absence of first order coherence. We also demonstrate the exploitation of the phenomenon for simulating quantum logic gates, including a controlled-NOT gate operation.
Original languageEnglish
Pages (from-to)6589-6603
Number of pages15
JournalOptics Express
Issue number6
Early online date31 Jan 2017
Publication statusPublished - 13 Mar 2017


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