Executive Summary : | The study aims to develop a planar planar photon-magnon coupling (PMC) on-chip hybrid system for NRI realization to address research challenges. NRI materials are commonly used in applications like perfect lenses, invisibility cloaks, and sensitive signal detection and processing. Strong photon-magnon coupling (PMC) has gained interest due to its applications in quantum information processing, spintronics, microwave communication, and signal processing. However, most reported NRI systems are passive and have fixed geometry after fabrication, making their operational frequency band and functions untunable. The study will also address the scalability of 3-D bulk hybrid systems for integrated quantum systems. The planar hybrid system will be developed by directly lithographically patterning an inverted split-ring resonator (ISRR) on an epitaxial YIG film to maximize the magnon-photon interaction. The'refractive index' of the hybrid resonance mediated by strong PMC can become negative at their corresponding resonance frequencies. The experimental demonstration of PMC induced NRI will be performed by measuring transmission spectra-versus-frequency in a vector network analyzer for different strengths of externally applied magnetic fields. The study will also explore the origin of NRI due to dynamic interactions between magnons and photons through externally applied bias fields or magnetic anisotropies. The study will also create a setup for direct measurement of negative refraction of EM waves and investigate its application by investigating the radiation pattern and manipulation using a patch antenna based on the combined phenomena of PMC and NRI. |