5 papers · 1 filter
Dual-state control of lasing and absorption via conjugate exceptional points
Arnab Laha, Somnath Ghosh, Adam Miranowicz +1
Lasing and coherent perfect absorption (CPA) are time-reversed manifestations of non-Hermitian light-matter interactions. While exceptional points (EPs) have been extensively explo…
Higher order Conjugate Exceptional Points in an 1D Photonic Bandgap Waveguide
Sibnath Dey, Harish N S Krishnamoorthy, Somnath Ghosh
We demonstrate third-order conjugate exceptional points (EPs) in a gain-loss assisted multi-mode 1D complementary photonic bandgap waveguide. Our study reveals the higher-order mod…
Parametrically encircled higher-order exceptional points in anti-parity-time symmetric optical microcavities
Dinesh Beniwal, Arnab Laha, Adam Miranowicz +1
The fascinating realm of non-Hermitian physics with the interplay of parity (P) and time-reversal (T) symmetry has been witnessing immense attention in exploring unconventional phy…
Correlated Nonreciprocity around Conjugate Exceptional Points
Arnab Laha, Adam Miranowicz, R. K. Varshney +1
The occurrence of exceptional points (EPs) is a fascinating non-Hermitian feature of open systems. A level-repulsion phenomenon between two complex states of an open system can be…
Defect in Photonic Time Crystals
Snehashis Sadhukhan, Somnath Ghosh
Photonic Time Crystals (PTCs) provide a completely new platform exhibiting light wave amplification owing to periodically varying electromagnetic properties. The need to control th…