Precision spectroscopy with a single 40Ca+ ion in a Paul trap*
Guan Huaa),b), Huang Yaoa),b), Liu Pei-Lianga),b), Bian Wua),b),c), Shao Hua),b),c), Gao Ke-Lina),b)†
       
“RF-Photon” correlation technique. Here, PMT: photomultiplier tube; Amp: amplitude; TAC: time amplitude convertor; Dis: discriminator; MCA: multi-channel analyzer; PC: personal computer.