1. Department of Physics, Volgograd State University, 400062 Volgograd, Russia
2. Vavilov State Optical Institute, 199053 Saint Petersburg, Russia
3. Saint Petersburg National Research University of Information Technologies, Mechanics and Optics (ITMO University), 197101 Saint Petersburg, Russia and Ioffe Physical-Technical Institute, Russian Academy of Sciences, 194021 Saint Petersburg, Russia
4. Singapore University of Technology and Design, 8 Somapah Road, 487372 Singapore
5. Entropique Group Ltd., 3 Spylaw Street, Maori Hill, 9010 Dunedin, New Zealand