+++ONLINE KOLLOQUIUM+++ Levitodynamics (Prof. Lukas Novotny)

  • Datum: 02.06.2020
  • Uhrzeit: 14:30
  • Vortragende(r): Prof. Lukas Novotny
  • ETH Zürich, Switzerland
I discuss our experiments with optically levitated nanoparticles in ultrahigh vacuum. Using both active and passive feedback techniques we cool the particle’s center-of-mass temperature below T 100μK and reach mean quantum occupation numbers of n = 4.

I show that mechanical quality factors of Q > 109 can be reached and that damping is dominated by photon recoil heating. The vacuum-trapped nanoparticle forms an ideal model system for studying non-equilibrium processes, nonlinear interactions, and ultrasmall forces.

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