We investigate the parity-time (PT) symmetric THz system realized with an infrared-pumped active graphene metasurface. We show that the chemically-tuned unidirectional transparency at the exceptional point may make ultra-sensitive gas/molecular/chemical sensors.
|Original language||English (US)|
|Title of host publication||2016 Conference on Lasers and Electro-Optics (CLEO)|
|Publisher||Institute of Electrical and Electronics Engineers (IEEE)|
|State||Published - Dec 19 2016|