A comparison is made between exact numerical results of the squeezing parameters in single-mode two-photon absorption with those predicted by short-time calculations. Numerical calculations lead to much higher squeezing and at longer times than those predicted by short-time calculations. The value of the squeezing parameter in the limit of long times and large initial photon numbers coincides in both calculations, as well as in the limit of long times and small initial photon numbers.
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Garcı́a-Fernández et al. (1986) studied this question.
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