4 papers
Microwave limiters implemented by coupled dielectric resonators based on a topological defect mode and CT-symmetry breaking
Mattis Reisner, Fabrice Mortessagne, Eleana Makri +2
We present a microwave realization of a reflective topological limiter based on an explicit self-induced violation of a charge-conjugation (CT) symmetry. The starting point is a bi…
Asymmetric Acoustic Energy Transport in Non-Hermitian Metamaterials
Ramathasan Thevamaran, Richard Massey Branscomb, Eleana Makri +4
The ability to control and direct acoustic energy is essential for many engineering applications such as vibration and noise control, invisibility cloaking, acoustic sensing, energ…
Unidirectional Photonic Circuit with Phase-Change Fano Resonator
Roney Thomas, Eleana Makri, Tsampikos Kottos +2
We demonstrate that the integration of a phase-change material (PCM) in one of the two microresonators of a photonic metamolecule, coupled to a bus waveguide, can lead to unidirect…
Waveguide photonic limiters based on topologically protected resonant modes
U. Kuhl, F. Mortessagne, E. Makri +2
We propose a concept of chiral photonic limiters utilising topologically protected localised midgap defect states in a photonic waveguide. The chiral symmetry alleviates the effect…