Photon statistics and spatial properties of photon pairs generated by spontaneous parametric down-conversion

2005 ◽  
Author(s):  
Martin Hamar ◽  
Jan Peřina, Jr. ◽  
Ondřej Haderka
Keyword(s):  
Photon Statistics ◽  
Spatial Properties ◽  
Photon Pairs ◽  
Parametric Down Conversion ◽  
Down Conversion

scholarly journals Coherently controlled quantum features in a coupled interferometric scheme

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Byoung S. Ham
Keyword(s):  
Optical Materials ◽  
Bell Inequality ◽  
Third Order ◽  
Deterministic Method ◽  
Photon Pairs ◽  
Wave Nature ◽  
Parametric Down Conversion ◽  
Pair Generation ◽  
Entangled Photon Pairs ◽  
Down Conversion

AbstractOver the last several decades, entangled photon pairs generated by spontaneous parametric down conversion processes in both second-order and third-order nonlinear optical materials have been intensively studied for various quantum features such as Bell inequality violation and anticorrelation. In an interferometric scheme, anticorrelation results from photon bunching based on randomness when entangled photon pairs coincidently impinge on a beam splitter. Compared with post-measurement-based probabilistic confirmation, a coherence version has been recently proposed using the wave nature of photons. Here, the origin of quantum features in a coupled interferometric scheme is investigated using pure coherence optics. In addition, a deterministic method of entangled photon-pair generation is proposed for on-demand coherence control of quantum processing.

scholarly journals Local Realistic Theory for PDC Experiments Based on the Wigner Formalism

2001 ◽  
Vol 56 (1-2) ◽  
pp. 178-181 ◽  
Author(s):  
Alberto Casado ◽  
Ramón Risco-Delgado ◽  
Emilio Santos
Keyword(s):  
Quantum Theory ◽  
Radiation Field ◽  
Hidden Variables ◽  
Standard Quantum ◽  
Realistic Theory ◽  
Photon Pairs ◽  
Parametric Down Conversion ◽  
Wigner Representation ◽  
Down Conversion ◽  
Made In

Abstract In this article we present a local hidden variables model for all experiments involving photon pairs produced in parametric down conversion, based on the Wigner representation of the radiation field. A modification of the standard quantum theory of detection is made in order to give a local realistic explanation of the counting rates in photodetectors. This model involves the existence of a real zeropoint field, such that the vacumm level of radiation lies below the threshold of the detectors.

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