Optical bistability and multistability via double dark resonance in graphene nanostructure

Abstract

Electrons in graphene nanoribbons can lead to exceptionally strong optical responses in the infrared and terahertz regions owing to their unusual dispersion relation. Therefore, on the basis of quantum optics and solid-material scientific principles, we show that optical bistability and multistability can be generated in graphene nanostructure under strong magnetic field. We also show that by adjusting the intensity and detuning of infrared laser field, the threshold intensity and hysteresis loop can be manipulated efficiently. The effects of the electronic cooperation parameter which are directly proportional to the electronic number density and the length of the graphene sample are discussed. Our proposed model may be useful for the nextgeneration all-optical systems and information processing based on nano scale devices.

Controllable optical bistability in a three-mode optomechanical system with a membrane resonator

“…In the past decade, great progress has been made in cavity optomechanics due to the fabrication of high-quality mechanical resonators. Many significant advances have been made in this emerging field, including the optical bistability (OB), [1][2][3][4][5][6][7][8] sideband effects, [9][10][11][12] optomechanically induced transparency, [13][14][15][16][17] quantum ground state cooling, [18][19][20][21] and so on. Especially, the OB, as a nonlinear phenomenon which shows two output states for the same input state, has received considerable attention due to its promising application in the all-optical switch.…”