Stabilizing nanoparticles in the intensity minimum: feedback levitation
on an inverted potential
Stabilizing nanoparticles in the intensity minimum: feedback levitation
on an inverted potential
We demonstrate the stable trapping of a levitated nanoparticle on top of an inverted potential using a combination of optical readout and electrostatic control. The feedback levitation on an inverted potential (FLIP) method stabilizes the particle at an intensity minimum. By using a Kalman-filter-based linear-quadratic-Gaussian (LQG) control method, we confine …