Open AccessModel of the coherent magneto-optical dynamics in a single chiral carbon nanotube
Author(s) -
G Slavcheva,
Philippe Roussignol
Publication year - 2010
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/242/1/012006
Subject(s) - carbon nanotube , physics , chirality (physics) , magnetic field , zeeman effect , hamiltonian (control theory) , condensed matter physics , metamaterial , faraday effect , nonlinear system , quantum mechanics , materials science , nanotechnology , chiral anomaly , mathematical optimization , mathematics , fermion , nambu–jona lasinio model
Communication oraleInternational audienceA theoretical framework and dynamical model for description of the natural optical activity and Faraday rotation in an individual chiral single-walled carbon nanotube in the highly nonlinear coherent regime is proposed. The model is based on a discrete-level representation of the optically active states near the band edge. Chirality is modelled by a system Hamiltonian corresponding to energy-level configurations, specific for each handedness, that are mirror reflections of each other. An axial magnetic field is introduced through the Aharonov-Bohm and Zeeman energy-level shifts.The time evolution of the quantum system is studied using the coherent vector Maxwell-pseudospin equations. Giant natural and magneto-optical gyrotropy, exceeding the one of the artificial photonic metamaterials, is numerically demonstrated for a single (5,4) carbon nanotube and an estimate of the magnitude of the natural circular dichroism and specific optical rotatory power is obtained. The model provides a framework for investigation of chirality and magnetic field dependence of the ultrafast nonlinear optical response of a single carbon nanotube