Bell-inequality violation by entangled single-photon states generated from a laser, an LED, or a halogen lamp

M. Pasini, N. Leone,  S. Mazzucchi, V. Moretti, D. Pastorello and L. Pavesi 

Physical Review A 102, 063708 (2020)  

 DOI: 10.1103/PhysRevA.102.063708

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