David J. Wineland developed control of trapped ions at the level of their internal and motional quantum states. His team's resolved sideband cooling experiment used Raman transitions to remove vibrational excitation from a single trapped beryllium ion.
Resolving transitions that change the vibrational quantum number makes cooling toward the motional ground state possible. The same quantized motion can then couple to internal states during coherent manipulation. Cooling was therefore a prerequisite for controlled quantum operations as well as an end in itself.[ref]
Resolved-Sideband Raman Cooling of a Bound Atom to the 3D Zero-Point Energy by Christopher Monroe and others. Abstract and introduction: three-dimensional ground-state cooling and quantum-logic motivation
Portrait of David J. Wineland
. NIST; existing portrait crop uploaded by Materialscientist. Public domain in the United States: U.S. federal Department of Commerce official-duty work (PD-USGov-DOC / PD US Government). Source usage terms, via Wikimedia Commons. Source.
David J. Wineland is an American physicist known for his pioneering work in the field of quantum optics and quantum information science. He has made significant contributions to the development of techniques for manipulating and measuring individual quantum systems, particularly using trapped ions. Wineland's research has important implications for the development of quantum computers and other quantum technologies.
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