Comparison of Magneto-Gravitational and Optical Trapping for Levitated Optomechanics

摘要

Levitated optomechanics in vacuum has shown promise for fundamental tests of physics including quantummechanics and gravity, for sensing weak forces or accelerations, and for precision measurements. While muchresearch has focused on optical trapping of dielectric particles, other approaches, such as magnetic trapping ofdiamagnetic particles, have been gaining interest. Here we review geometries for both optical and magnetictrapping in vacuum, with an emphasis on the properties of traps for particles with a diameter of at least onemicrometer.