2026/03/23 by Aritra Ghosh, M. Bhattacharya
Physics and Astronomy · #Action (physics) #Class (philosophy) #Coupling (piping) #Field (mathematics) #Force Microscopy Techniques and Applications #Mechanical and Optical Resonators #Quantum and Classical Electrodynamics #Renormalization
paper · pdf · doi:10.1103/pn7p-yb5r
openalex publication_date 2026/06/24 · openalex created_date 2026/06/25 · openalex updated_date 2026/08/05
We investigate how non-Markovian mechanical dissipation affects exceptional points in linearized optomechanical systems with red-sideband drive. For a chosen non-Ohmic mechanical bath, we derive analytical conditions for the memory-renormalized exceptional point by employing a pseudomode mapping, thereby demonstrating that structured environments displace the mode coalescence away from the Markovian prediction. Crucially, we reveal that failing to account for this memory-induced shift suppresses the divergent Petermann factor by orders of magnitude, showing that accurate bath modeling is essential for the successful operation of exceptional-point-based devices whenever reservoir-induced memory is non-negligible. We finally show that non-Markovianity modifies the cavity reflection spectrum, manifesting as a shallower optomechanically-induced-transparency dip, providing therefore an experimentally-accessible signature of structured mechanical environments.