摘要
A demonstration of coherent quantum control for ultrafast precise selection of closely-lying states is reported. A phase-locked pair of femtosecond laser pulses is generated through a pulse shaper to excite the ground-state cesium atom to the Cs(7D32) and Cs(7D52) states by two-photon absorption. The excited state population is measured by detecting fluorescence from each spin-orbit state. By controlling the phase-difference of the pulse pair, an ultrafast precise selection is accomplished. The contrast ratio of the maximal to minimal selection ratio exceeds 103 with the delay less than 400fs.
原文 | English |
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文章編號 | 063404 |
期刊 | Physical Review A - Atomic, Molecular, and Optical Physics |
卷 | 72 |
發行號 | 6 |
DOIs | |
出版狀態 | Published - 12月 2005 |