Optical Devices based on Limit Cycles and Amplification in Semiconductor Optical Cavities

摘要

At strong pump powers, a semiconductor optical cavity passes through a Hopfbifurcation and undergoes self-oscillation. We simulate this device usingsemiclassical Langevin equations and assess the effect of quantum fluctuationson the dynamics. Below threshold, the cavity acts as a phase-insensitive linearamplifier, with noise $\sim 5\times$ larger than the Caves bound. Abovethreshold, the limit cycle acts as an analog memory, and the phase diffusion is$\sim 10\times$ larger than the bound set by the standard quantum limit. Wealso simulate entrainment of this oscillator and propose an optical Isingmachine and classical CNOT gate based on the effect.