title: Microwave manipulation of an atomic electron in a classical orbit.
abstract: Although an atom is a manifestly quantum mechanical system, the electron in an atom can be made to move in a classical orbit almost indefinitely if it is exposed to a weak microwave field oscillating at its orbital frequency. The field effectively tethers the electron, phase-locking its motion to the oscillating microwave field. By exploiting this phase-locking, we have sped up or slowed down the orbital motion of the electron in excited lithium atoms by increasing or decreasing the microwave frequency between 13 and 19 gigahertz; the binding energy and orbital size change concurrently.
authors.affiliation: Department of Physics, University of Virginia, 382 McCormick Road, Charlottesville, VA 22904, USA. hm3c@virginia.edu.
authors.forename: H
authors.initials: H
authors.lastname: Maeda
authors.forename: D V L
authors.initials: DV
authors.lastname: Norum
authors.forename: T F
authors.initials: TF
authors.lastname: Gallagher