Degenerate Raman Sideband Cooling of Trapped Cesium Atoms at Very High Atomic Densities
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چکیده
Vladan Vuletić, Cheng Chin, Andrew J. Kerman, and Steven Chu Department of Physics, Stanford University, Stanford, California 94305-4060 (Received 25 August 1998) We trap 107 cesium atoms in a far red detuned 1D optical lattice. With degenerate Raman sideband cooling we achieve a vibrational ground state population of 80% for the steep trapping direction. Collisional coupling enables us to cool the spin-polarized gas in 3D without loss of atoms to a peak phase space density of 1y180 at a mean temperature of 2.8 mK and a density of 1.4 3 1013 cm23. [S0031-9007(98)08002-8]
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تاریخ انتشار 1998