1. Department of Physics and Engineering, ITMO University, Saint Petersburg 197101, Russia
2. Nonlinear Physics Center, Australian National University, Canberra, ACT 2601, Australia
3. St. Petersburg State University, Saint Petersburg 199034, Russia
4. Center of Information Optical Technologies, ITMO University, Saint Petersburg 197101, Russia
5. Department of Materials Science and Engineering and Center for Functional Photonics (CFP), City University of Hong Kong, Hong Kong S.A.R.
6. Department of Physics, Chalmers University of Technology, 412 96 Gothenburg, Sweden
7. University of Texas at Dallas, Richardson, Texas 75080, United States