We establish a universal scaling theory that explains how light transports in multimode nonlinear photonic circuits under thermal influence, unifying ballistic and diffusive regimes. Additionally, we uncover a fundamental connection between thermal and power conductivities, paving the way for novel all-optical cooling strategies.

See our publication at: Phys. Rev. Letters 132, 193802 (2024)  

volume

 14, Article number: 5515 (2023)  

By using a nonlinear PT circuit that presents an exceptional point degeneracy (EPD), we develop an extremely sensitive sensor which in turn is robust against noise. Our results resolve a long-standing debate on the efficacy of EPD-sensing in active systems above self-oscillating threshold.

See our publication at: Nature Communications 14, 5515 (2023)  

volume

 14, Article number: 5515 (2023)  

We investigate the collective dynamics of nonlinearly interacting modes in multimode photonic settings. Our analysis sheds light on the nature of the thermal equilibrium states and reveals the existence of optical phase transitions which resemble a paramagnetic to a ferromagnetic and to a spin-glass phase transition occurring in spin networks.

See our publication at Phys. Rev. X 10, 031024 (2020)