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Updated: Jun 20, 2026

Cooling an Optically Trapped Ultracold Fermi Gas by Periodical Driving
Published on: March 30, 2017
Double-resonance and optical-pumping experiments on electromagnetically confined, laser-cooled ions
D J Wineland1, J C Bergquist, W M Itano
1Frequency and Time Standards Group, National Bureau of Standards, Boulder, Colorado 80303, USA.
Abstract:
Experiments illustrating advantages and unique features of double-resonance and optical pumping on electromagnetically confined, laser-cooled ions are discussed. In certain cases, scattered light from the cooling transition can be used as a monitor in double-resonance experiments to give nearly 100% detection efficiency. Nonradiative relaxation rates are extremely small for stored ions, permitting nearly complete optical pumping, even in extremely weak pumping schemes.
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