Title :
Parity-time-symmetric epsilon-near-zero metamaterials
Author :
Savoia, S. ; Castaldi, G. ; Galdi, Vincenzo ; Alu, Andrea ; Engheta, Nader
Author_Institution :
Dept. of Eng., Univ. of Sannio, Benevento, Italy
Abstract :
We study epsilon-near-zero (ENZ) metamaterials with balanced loss and gain characterized by parity-time (PT ) symmetry. Through the example of a wave tunneling phenomenon, we show that the ENZ regime is particularly suited for PT -symmetry-based phenomena, since it enhances the effects of feasibly small levels of gain (and loss). Overall, the combination of the ENZ and PT -symmetry concepts may pave the way to novel, and otherwise unattainable, propagation effects and anomalous light-matter interactions.
Keywords :
optical metamaterials; ENZ metamaterials; PT-symmetry-based phenomena; balanced loss; light-matter interactions; parity-time-symmetric epsilon-near-zero metamaterials; propagation effects; wave tunneling phenomenon; Educational institutions; Electronic mail; Metamaterials; Optics; Photonics; Surface waves; Tunneling;
Conference_Titel :
Antennas and Propagation Society International Symposium (APSURSI), 2014 IEEE
Conference_Location :
Memphis, TN
Print_ISBN :
978-1-4799-3538-3
DOI :
10.1109/APS.2014.6904939
