The process of ionization of a two-dimensional quantum dot by the field of a linearly polarized electromagnetic wave is studied. For the first time, analytic expressions for the ionization rate and partial probabilities of the process per unit time are obtained. The dependence of the probability of the process on the parameters of the confining potential and the Keldysh parameter are studied. The results of the work are compared with the earlier results on one- and three-dimensional nanostructures with a short-range potential.
73.21.La Quantum dots
$^1$Moscow State University of Instrumental Engineering and Informatics, ul. Stromynka 20, Moscow, 107996, Russia
$^2$Moscow Institute of Electronics and Mathematics, National Research University Higher School of Economics, Bol’shoi Trekhsvyatskii per. 3/12, Moscow, 101000, Russia
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