Background-Free Doppler Cooling of Trapped Ions Using Quadrupole Transition
ZHOU Fei1** , XIE Yi1,2 , CHEN Liang1** , WAN Wei1,2 , WU Hao-Yu1,2 , FENG Mang1**
1 State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 4300712 University of Chinese Academy of Sciences, Beijing 100049
Abstract ：We demonstrate experimentally the Doppler cooling of 40 Ca+ ions using the S 1/2 →D 3/2 electric quadrupole transition, in which the scattering light that is much different from the exciting light makes it possible to collect background-free fluorescence. The idea excluding 397 nm excitation has the advantage of high-sensitivity detection and only employs lasers in red and infrared wavelengths, which should be practical for trapped-ion quantum information processing.
收稿日期: 2012-12-26
出版日期: 2013-03-29
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2013, Vol. 30 
