Multifunctional Logic Gates based on Resonant Transmission at Atomic-Plasmonic structure

Abstract

Regarding confinement of light at nanoscale dimensions in plasmonic structures, we try to show the impact of hot atomic vapor spectroscopy in a miniaturized scale. In such a combined structure, resonant coupling of atom to plasmonic mode provides diverse ways to control the optical response of the system. We fabricate an atomic plasmonic cell based on Rubidium atomic vapor and gold plasmonic thin film onto Krestchman setup to introduce resonant coupling (EIT-like) of atom- plasmons as a tunable all optical bandpass filter, switch or logic gates. These all-optical devices such as as NOR and XNOR logic gates well done based on the filter by incidence angle of light, temperature as well as external magnetic field. We believe the possibility of easy modulation of atomic susceptibility, not only through direct alteration on atoms but also through common methods available for modulation of plasmonic mode, has the potential to design and fabricate modern all-optical devices.