Sideband injection locking of microwave frequency combs in a superconducting optomechanical circuit.

ABSTRACT: Superconducting optomechanical circuits enable frequency mixing of optical and mechanical modes, facilitating the generation of microwave frequency combs. However, such optomechanical combs suffer from frequency fluctuations, requiring their stabilization for applications in precision sensing and signal processing. Here, we investigate the sideband injection locking of microwave frequency combs in a niobium-based superconducting optomechanical circuit. By strongly driving the device with a blue-detuned pump to induce parametric instability and introducing an additional tone near individual comb peaks, we study how the locking range varies with the power, the frequency position, and the sweep direction of the injection tone. The locking responses show interesting features such as injection

SUBMITTER: Jeong J 

PROVIDER: S-EPMC12644649 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature