The Vienna Doctoral Programme on Complex Quantum Systems invites to a Students TALK by David Grass Feedback cooling and transport of nanoparticles inside hollow core photonic crystal fibers Optically levitated nanospheres in ultra-high vacuum offer a promising route towards testing fundamental questions in physics. Realizing such experiments requires a ultra-high vacuum compatible loading mechanism of nanoparticles into an optical trap, which has not been realized to date. Here I present a novel approach based on hollow core photonic crystal fibers. They allow optical trapping and transport of nanoparticles, 3d feedback cooling of their centre-of-mass motion and deterministic loading and positioning in an ultra-high vacuum environment.