Optics Communications ( IF 2.125 ) Pub Date : 2020-01-02 , DOI: 10.1016/j.optcom.2019.125217 Ling-Juan Feng, Gong-Wei Lin, Yue-Ping Niu, Shang-Qing Gong
We present an efficient method for quantum estimation of gravitational acceleration in a modulated optomechanical system. We use the squeezed mechanical mode, which could potentially enhance the optomechanical interaction between cavity field and mechanical oscillation into the strong-coupling regime. We show that the strong optomechanical coupling can significantly improve the measurement sensitivity of gravitational acceleration. The proposed scheme can provide a platform for further investigations on precision measurement of gravitational acceleration.