"Cooling and Amplification of a Vacuum-Trapped Nanoparticle"
PHYSICS DEPARTMENT COLLOQUIUM
Cooling and Amplification of a Vacuum-Trapped Nanoparticle Lukas Novotny
ETH Zurich, Zurich, Switzerland
We optically trap a single nanoparticle in high vacuum and cool its three spatial degrees of freedom by means of active
parametric feedback. The small size and mass of the nanoparticle yield high resonance frequencies and high Q-factors
along with low recoil heating, which are essential conditions for ground state cooling and for low decoherence. The
vacuum-trapped nanoparticle forms an ideal model system for studying non-equilibrium processes, nonlinear interactions,
and ultrasmall forces.
March 19, 2014 (Wednesday)