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.
CITATION STYLE
Maeda, H., Norum, D. V. L., & Gallagher, T. F. (2005). Microwave manipulation of an atomic electron in a classical orbit. Science, 307(5716), 1757–1760. https://doi.org/10.1126/science.1108470
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