Volpe, GiovanniPetrov, D.2020-04-072020-04-072006-11-240031-9007http://hdl.handle.net/11693/53563We report the statistical analysis of the movement of a submicron particle confined in a harmonic potential in the presence of a torque. The absolute value of the torque can be found from the auto- and cross-correlation functions of the particle’s coordinates. We experimentally prove this analysis by detecting the torque produced onto an optically trapped particle by an optical beam with orbital angular momentum.EnglishArticle10.1103/PhysRevLett.97.2106031079-7114