Engineering spatial correlations of entangled photon pairs by pump beam shaping | Zendy

Pauline Boucher | Zendy; Hugo Defienne | Zendy; Sylvain Gigan | Zendy

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Engineering spatial correlations of entangled photon pairs by pump beam shaping

Author(s) -

Pauline Boucher,

Hugo Defienne,

Sylvain Gigan

Publication year - 2021

Publication title -

optics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.524

H-Index - 272

eISSN - 1071-2763

pISSN - 0146-9592

DOI - 10.1364/ol.425372

Subject(s) - quantum entanglement , spontaneous parametric down conversion , physics , coherence (philosophical gambling strategy) , optics , photon , photon entanglement , quantum imaging , parametric statistics , quantum optics , quantum technology , spatial coherence , quantum , quantum information , quantum channel , measure (data warehouse) , quantum network , laser , quantum mechanics , computer science , open quantum system , statistics , mathematics , database

The ability to engineer the properties of quantum optical states is essential for quantum information processing applications. Here, we demonstrate tunable control of spatial correlations between photon pairs produced by spontaneous parametric down-conversion, and measure them using an electron multiplying charge coupled device (EMCCD) camera. By shaping the spatial pump beam profile in a type-I collinear configuration, we tailor the spatial structure of coincidences between photon pairs entangled in high dimensions without effect on intensity. The results highlight fundamental aspects of spatial coherence and hold potential for the development of quantum technologies based on high-dimensional spatial entanglement.

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