Abstract
Following Dirac’s assertion: “… for a quantum dynamic system that has a classical analogue, unitary transformation in the quantum theory is the analogue of contact transformation in the classical theory”, we find that the general SU(1, 1) single-mode squeezing operator F just corresponds to the generalized Fresnel transform (GFT) in wave optics. We derive the normal product form and canonical coherent state representation of F, whose matrix element in the coordinate representation is just the GFT. It is shown that F is a faithful representation of symplectic group which indicates that two successive GFTs is still a GFT. Applications of F in some other optical transforms, such as the Fresnel-wavelet transform, are presented.
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