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A microwave atomic clock based on 113Cd+ ions at Tsinghua University is carried out for seven years. To further improve the performance of the clock, a new experimental setup with dual traps and dual species ions was proposed. To investigate the efficiency of sympathetic cooling and the dynamic process of ions, numerical simulation study of the dual-species ion ensembles by the Molecular-dynamics...
A lin-par-lin Ramsey-CPT microwave atomic clock with dispersion detection is investigated in this paper, in which high signal contrast and narrow linewidth are obtained. The pulsed transmitted laser is synchronously detected by a sample-and-hold amplifier and a lock-in amplifier. The frequency shift of the microwave, represented by the output of the lock-in amplifier is acquired. An instability is...
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