Control and measurement of electric dipole moments in levitated optomechanics

  title={Control and measurement of electric dipole moments in levitated optomechanics},
  author={Gadi Afek and Fernando Monteiro and Benjam{\'i}n Siegel and Jiaxiang Wang and S.D. Dickson and Juan Recoaro and Molly Watts and David C. Moore},
  journal={Physical Review A},
Levitated optomechanical systems are rapidly becoming leading tools for precision sensing, enabling a high level of control over the sensor’s center of mass motion, rotation and electric charge state. Higher-order multipole moments in the charge distribution, however, remain a major source of backgrounds. By applying controlled precessive torques to the dipole moment of a levitated microsphere in vacuum, we demonstrate cancellation of dipole-induced backgrounds by 2 orders of magnitude. We… 

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