@article{eb7ac2d0e2124faeb278e507e9f19fe5,
title = "Parity–time symmetry and exceptional points in photonics",
author = "K. {\"O}zdemir and S. Rotter and F. Nori and L. Yang",
note = "Funding Information: The authors thank A. Brandst{\"o}tter, M. Horodynski, M. K{\"u}hmayer, K. Pichler, A. Schumer and H. Yilmaz, for their help with the figures and illustrations. {\c S}.K.{\"O}. is supported by Army Research Office (ARO) grant no. W911NF-16-1-0339, W911NF-18-1-0043, Air Force Office of Scientific Research (AFOSR) award no. FA9550-18-1-0235, National Science Foundation (NSF) (1807485), and by The Pennsylvania State University, Materials Research Institute (MRI). {\c S}.K.{\"O}. thanks Jan Mateo for his continuous support. S.R. is supported by the Austrian Science Fund (FWF) through projects no. SFB-NextLite F49-P10 and I 1142-N27, and by the Horizon 2020 programme of the European Union (RISE project NHQWAVE 691209). F.N. is supported in part by the MURI Center for Dynamic Magneto-Optics via AFOSR award no. FA9550-14-1-0040, ARO grant no. W911NF-18-1-0358), Asian Office of Aerospace Research and Development (AOARD) grant no. FA2386-18-1-4045, Japan Science and Technology Agency (JST) (Q-LEAP program, ImPACT program, and CREST grant no. JPMJCR1676), Japan Society for the Promotion of Science (JSPS) (JSPS-RFBR grant no. 17-52-50023, and JSPS-FWO grant no.VS.059.18N), RIKEN-AIST Challenge Research Fund, and the John Templeton Foundation.",
year = "2019",
month = aug,
day = "1",
doi = "10.1038/s41563-019-0304-9",
language = "English (US)",
volume = "18",
pages = "783--798",
journal = "Nature Materials",
issn = "1476-1122",
publisher = "Nature Publishing Group",
number = "8",
}