*Georgiy Tkachenko1, Ivan Toftul2, Viet Giang Truong1, Sile Nic Chormaic1
(1. Okinawa Institute of Science and Technology Graduate University, Onna, Okinawa 904-0495, Japan, 2. Department of Physics and Engineering, ITMO University, Kronverkskiy prospekt 49197101, Saint-Petersburg, Russia)