Nonreciprocal and topology-inspired ground-state cooling in a spinning optomechanical resonator
Phys. Rev. A 113, 013523 – Published 16 January, 2026
DOI: https://doi.org/10.1103/9s6f-x32t
Abstract
We propose and analyze nonreciprocal and topology-inspired ground-state cooling in a spinning cavity optomechanical resonator. An exact coupled-mode treatment yields a cross-interference damping rate which shows the increasing rotation suppresses the backscattering-mediated heating pathway, recovering the scattering-free limit. In the degenerate regime, the linearized dynamics admit a Su-Schrieffer-Heeger representation in which optical backscattering acts as a next-nearest-neighbor coupling. This perturbation breaks chiral symmetry and precludes a quantized winding number yet under open boundaries supports an edge-localized Tamm-Shockley-type bound state. With suitable parameters, the boundary channel enables robust phonon extraction and achieves subunity phonon occupancies in the presence of finite backscattering, albeit with a slower cooling rate and a higher steady-state phonon number due to scattering and hybridization.
