Figure 2. The figure illustrates the correlation detection rate in for the HOM interferometry of biphoton, depicting the extraction of position marginals from the Wigner distribution function of the biphoton state across varying values of decoherence time (𝜏)

From

Analyzing the Decoherence on Biphoton and Schrödinger Cat States through Wigner Function

Simanshu Kumar, Nandan S Bisht

International Journal of Physics. 2025, 13(3), 73-79 doi:10.12691/ijp-13-3-5