Effective Control of the Optical Bistability of a Three-Level Quantum Emitter near a Nanostructured Plasmonic Metasurface

We study, theoretically, the phenomena optical bistability and multistability of a hybrid quantum-plasmonic system immersed within an ring cavity. The consists three-level V-type quantum emitter two-dimensional plasmonic metasurface gold nanoshells. are placed in close proximity to each other so that strong interference spontaneous emission occurs, which enables modification optical-bistability/ hysteresis curves. Along with this, interaction between allows for active control corresponding bistable threshold intensity. Furthermore, we show by varying metasurface-emitter separation, transition from is observed. Lastly, introducing additional incoherent pumping system, have emergence phenomena, such as probe absorption gain, or without population inversion. results may find technological application on-chip nanoscale photonic devices, optoelectronics solid-state information science.