Atto-Nm Torque Sensing with a Macroscopic Optomechanical Torsion Pendulum

Kentaro Komori, 2, ∗ Yutaro Enomoto, Ching Pin Ooi, Yuki Miyazaki, Nobuyuki Matsumoto, 4, 5 Vivishek Sudhir, Yuta Michimura, and Masaki Ando Department of Physics, University of Tokyo, Bunkyo, Tokyo 113-0033, Japan LIGO Laboratory, Massachusetts Institute of Technology, Cambridge, MA 02139, USA Frontier Research Institute for Interdisciplinary Sciences, Tohoku University, Sendai 980-8578, Japan Research Institute of Electrical Communication, Tohoku University, Sendai 980-8577, Japan JST, PRESTO, Kawaguchi, Saitama 332-0012, Japan (Dated: January 22, 2020)