Open AccessRabi oscillations of surface plasmon polaritons in graphene-pair arrays
Author(s) -
Feng Wang,
Chengzhi Qin,
Bing Wang,
Shaolin Ke,
Hua Long,
Kai Wang,
Peixiang Lu
Publication year - 2015
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.23.031136
Subject(s) - graphene , surface plasmon polariton , rabi cycle , plasmon , surface plasmon , polariton , materials science , rabi frequency , optics , condensed matter physics , physics , optoelectronics , quantum , nanotechnology , quantum mechanics , laser
We investigate the Bloch mode conversion of surface plasmon polaritons in a periodic array of graphene pairs with each consisting of two separated parallel graphene sheets. The employment of graphene pair as a unit cell in the array yields two Bloch modes belonging to different bands. By periodically modulating the permittivity of dielectrics between graphene along the propagation direction, the interband transitions occur and the modes will alternatively couple to each other, similar to traditional Rabi oscillations in quantum systems. The indirect Rabi oscillations can also be observed through introducing transverse modulation momentum. The period of Rabi oscillations can be optimized by taking advantage of the flexible tunability of graphene. The study suggests that the structure have applications in optical switches and mode converters operating on deep-subwavelength scale.