R
Ramy El-Ganainy
Researcher at Michigan Technological University
Publications - 162
Citations - 16300
Ramy El-Ganainy is an academic researcher from Michigan Technological University. The author has contributed to research in topics: Photonics & Nonlinear system. The author has an hindex of 37, co-authored 148 publications receiving 12667 citations. Previous affiliations of Ramy El-Ganainy include Max Planck Society & University of Toronto.
Papers
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Journal ArticleDOI
Observation of parity–time symmetry in optics
Christian E. Rüter,Konstantinos G. Makris,Ramy El-Ganainy,Demetrios N. Christodoulides,Mordechai Segev,Detlef Kip +5 more
TL;DR: In this paper, the authors report the first observation of the behaviour of a PT optical coupled system that judiciously involves a complex index potential, and observe both spontaneous PT symmetry breaking and power oscillations violating left-right symmetry.
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Non-Hermitian physics and PT symmetry
Ramy El-Ganainy,Konstantinos G. Makris,Mercedeh Khajavikhan,Ziad H. Musslimani,Stefan Rotter,Demetrios N. Christodoulides +5 more
TL;DR: In this paper, the interplay between parity-time symmetry and non-Hermitian physics in optics, plasmonics and optomechanics has been explored both theoretically and experimentally.
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Beam dynamics in PT symmetric optical lattices.
TL;DR: In this paper, parity-time symmetric periodic potentials are investigated in detail for both one-and two-dimensional lattice geometries, and it is shown that PT periodic structures can exhibit unique characteristics stemming from the nonorthogonality of the associated Floquet-Bloch modes.
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Enhanced sensitivity at higher-order exceptional points
Hossein Hodaei,Absar U. Hassan,Steffen Wittek,Hipolito Garcia-Gracia,Ramy El-Ganainy,Demetrios N. Christodoulides,Mercedeh Khajavikhan +6 more
TL;DR: Higher-order exceptional points are observed in a coupled cavity arrangement—specifically, a ternary, parity–time-symmetric photonic laser molecule—with a carefully tailored gain–loss distribution and it is found that the frequency response follows a cube-root dependence on induced perturbations in the refractive index.
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Theory of coupled optical PT-symmetric structures
TL;DR: Starting from Lagrangian principles, a formalism suitable for describing coupled optical parity-time symmetric systems is developed.