Nonclassical Optical Bistability and Resonance-Locked Regime of Photon-Pair Sources Using Silicon Microring Resonator

This study presents $e{{0}{0ex}}x{{0}{0ex}}p{{0}{0ex}}e{{0}{0ex}}r{{0}{0ex}}i{{0}{0ex}}m{{0}{0ex}}e{{0}{0ex}}n{{0}{0ex}}t{{0}{0ex}}a{{0}{0ex}}l$ evidence of nonclassical optical bistability, in the context of photon-pair generation via spontaneous four-wave mixing in a silicon microring resonator. The hysteresis results greatly benefit on-chip quantum optics, to build a bridge between classical and potential nonclassical applications of optical bistability in microcavities. This work also improves traditional resonance-locked strategies by balancing power-induced heating and active cooling; since no precise pump tuning is required, the proposed resonance-locked regime can be more widely applied in fixed-wavelength optical communication systems.