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  1. No Access

    Article

    Coherent effects in a three-photon CPT process of Ca+

    Linewidth narrowing and other quantum coherent effects based on three-photon coherent population trap** (CPT) in Ca+ ions are investigated. If the propagation directions of the three lasers obey the phase match...

    Qu Liu 刘曲, Bao-quan Ou 欧保全, **-wen Zhu 朱熙文, Ke-lin Gao 高克林 in Frontiers of Physics (2011)

  2. No Access

    Article

    Preliminary frequency measurement of the electric quadrupole transition in a single laser-cooled 40Ca+ ion

    The trap** and laser cooling of 40Ca+ ion on the way toward optical frequency standards have been developed. A single 40Ca+ ion is trapped in the miniature Paul trap and laser cooled by two frequency-stabilized...

    Bin Guo 郭彬, Hua Guan 管桦, Qu Liu 刘曲, Yao Huang 黃垚… in Frontiers of Physics in China (2009)