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Exceptional Point Dynamics in Photonic Honeycomb Lattices with PT Symmetry
Hamidreza Ramezani, Tsampikos Kottos, Vassilios Kovanis +1
We theoretically investigate the flow of electromagnetic waves in complex honeycomb photonic lattices with local PT symmetries. Such PT structure is introduced via a judicious arra…
Unidirectional Invisibility induced by PT-Symmetric Periodic Structures
Zin Lin, Hamidreza Ramezani, Toni Eichelkraut +3
We show that parity-time (PT) symmetric Bragg periodic structures, near the spontaneous PT - symmetry breaking point, can act as unidirectional invisible media. In this regime, the…
Ab initio description of nonlinear dynamics of coupled microdisk resonators with application to self-trapping dynamics
Hamidreza Ramezani, Tsampikos Kottos, Vladimir Shuvayev +1
Ab initio approach is used to describe the time evolution of the amplitudes of whispering gallery modes in a system of coupled microdisk resonators with Kerr nonlinearity. It is sh…