Quantum Fano Membrane Design Accesses Narrow Modes for Optomechanical Systems

Researchers at Chalmers University of Technology demonstrated a new approach to optomechanical systems by replacing a conventional dielectric membrane with a photonic-crystal membrane. Unlike traditional designs offering limited control over optical properties, this Fano membrane enables precise control of optical modes, a key advancement for manipulating light and mechanical motion. The work reveals that in a reflective-membrane configuration, only the symmetric cavity mode interacts with the Fano mode, while the antisymmetric mode remains decoupled, a specific outcome that allows for selective control. This design overcomes limitations…