Derivation of the density matrix of a single photon produced in parametric down-conversion
Piotr Leszek Kolenderski, Wojciech Wasilewski · Physical Review A · 2009
We discuss an effective numerical method of density matrix determination of fiber coupled single photon generated in process of spontaneous parametric down conversion in type I noncollinear configuration. The presented theory has been successfully applied in case of source utilized to demonstrate the experimental characterization of spectral state of single photon, what was reported in Wasilewski, Kolenderski, and Frankowski [Phys. Rev. Lett. 99, 123601 (2007)].