Nonperturbative methods in the problem of multiphoton excitation of atom by squeezed light
Alexandr V. Belousov, Victor A. Kovarsky · NASA Technical Reports Server (NASA) · 1993
Multiphoton detectors for the strong squeezed light vacuum are considered. The result is compared with the perturbation theory. It is shown that as the degree of squeezing is increased the statistical factor decreases.