Work

Engineering spatial correlations of entangled photon pairs by pump beam shaping

Year: 2021

Type: article

Abstract: 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.

Source: Optics Letters

DOI: 10.1364/ol.425372

Authors: Pauline Boucher, Hugo Defienne, Sylvain Gigan

Institutions: Collège de France, Laboratoire Kastler Brossel, Scottish Universities Physics Alliance, University of Glasgow

Language: English

Topic: Quantum Information and Cryptography

Subfield: Artificial Intelligence

Field: Computer Science

Domain: Physical Sciences

Open Access status: bronze

Funders: Institut Universitaire de France, H2020 European Research Council, H2020 Marie Skłodowska-Curie Actions

Awards: Adaptive Optics for Quantum Communication, G4530935461