A researcher whose team used resolved sideband cooling to prepare the motion of a single trapped ion. The experiment measured a high probability of occupying the three-dimensional motional ground state, providing controlled starting conditions for operations that couple internal atomic states to vibration.[ref]
Resolved-Sideband Raman Cooling of a Bound Atom to the 3D Zero-Point Energy by Christopher Monroe and others. Abstract and pp. 4011–4014: three-dimensional cooling and quantum-logic motivation
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