S.V. Ivanov - Senior Research Scientist, National Research University of Information Technologies, Mechanics and Optics. E-mail: svivanov@mail.ifmo.ru, sergei.v.ivanov@gmail.com
D.A. Nasonov - Ph.D. (Eng.), Junior Research Scientist, National Research University of Information Technologies, Mechanics and Optics. E-mail: denis.nasonov@gmail.com