Wigner Function Description of Nonlocal Features of Quantum Fields Generated in Nonlinear Optical Processes

摘要: Fields generated in a large number of nonlinear optical processes (including those with losses) have Wigner distribution which is Gaussian centered around the mean value field.4 We show9 that Bell inequality for an correlation experiment two coupled modes process can be expressed as relating to parameters underlying function. The example parametric down-conversion, has already been used experiments2 demonstrate quantum nonlocality, considered.