• Fundamental tests of physics with optically trapped microspheres 

    Li, Tongcang (2011-05)
    This dissertation details our experiments on studying the Brownian motion of an optically trapped microsphere with ultrahigh resolution, and cooling of its motion towards the quantum ground state. We have trapped glass ...
  • Superdiffusive trajectories in Brownian motion 

    Duplat, Jerome; Kheifets, Simon; Li, Tongcang; Raizen, Mark G.; Villermaux, Emmanuel (2013-02)
    The Brownian motion of a microscopic particle in a fluid is one of the cornerstones of statistical physics and the paradigm of a random process. One of the most powerful tools to quantify it was provided by Langevin, who ...