Juggling with Light.

  title={Juggling with Light.},
  author={Albert J. Bae and Dag Hanstorp and Kelken Chang},
  journal={Physical review letters},
  volume={122 4},
We discovered that when a pair of small particles is optically levitated, the particles execute a "dance" whose motion resembles the orbits of balls being juggled. This motion lies in a plane perpendicular to the polarization of the incident light. We ascribe the dance to a mechanism by which the dominant force on each particle cyclically alternates between radiation pressure and gravity as each particle takes turns eclipsing the other. We explain the plane of motion by considering the… 

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