Enhancement of Light Matter Interactions in Sensing and Quantum Optics

Abstract

We have studied the enhancement of light matter interactions leaded to new capabilities in sensing and quantum optics. We have demonstrated a quasi-normal approach for a hybrid transition metal dichalogenides metallic nano-particles system in the strong coupling regime. We have examined the effect of temperature, gap size and detuning to show the characteristics of the coupling between transition metal dichalcogenide and metallic nanoparticles. Large spectral splitting was found for different gap size. The Fano contributions from the individual quasi normal mode expansion of the photonic Green function. The complex mode volume expansion was also used and were found spatially dependent. It was also shown that the results of the Purcell factor as a function of gap size between the metallic nanoparticles and transition metal dicholcogenide. We have shown that the poles of the hybridized modes resulted a small splitting than the Purcell factor spectra. It was also provided the quasi normal mode technique was used to obtain the dipole transmission and was compared the spectral splitting with Purcell factor results. The spectral mode splitting were increased when mode coupling was increased for large detuning. The Rabi splitting was achieved using a microcavity coupled to a transition metal dichalogenide sheet with arrays of gold disks. Normal mode splitting with planar like cavity systems strong coupling phenomena of single dots was found in a number of semiconductor micro cavity systems. The cavity emitter coupling rate was more appropriate because it was describing a single quantum emitter and the light field within a dipole approximation, the single mode approximation is also excellent because cavity system is very low loss and yielded substantial quality factors. The interaction of these emitter cavity systems in the strong coupling regime was clear because the emitter cavity coupling rate was large than any dissipation rates. The obtained results were found in good agreement with previous results.