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Development of an Integrating Sphere Cold Atom Clock 被引量:3
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作者 ZHENG Ben-Chang CHENG Hua-Dong +3 位作者 MENG Yan-Ling XIAO Ling wan jin-yin LIU Liang 《Chinese Physics Letters》 SCIE CAS CSCD 2013年第12期30-32,共3页
The Ramsey fringes with a linewidth of 45 Hz and a signal-to-noise ratio of 120 are demonstrated for a integrating sphere atom clock.The cycle time of the atom clock is reduced to 80 ms with the help of a pulsed cooli... The Ramsey fringes with a linewidth of 45 Hz and a signal-to-noise ratio of 120 are demonstrated for a integrating sphere atom clock.The cycle time of the atom clock is reduced to 80 ms with the help of a pulsed cooling method.This result indicates that the short-term stability of the clock is in the order of 10^(-12). 展开更多
关键词 METHOD integrating CLOCK
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An Optimum Method for a Grooved 2D Planar Ion Trap Design
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作者 JI Wei-Bang wan jin-yin +1 位作者 CHENG Hua-Dong LIU Liang 《Chinese Physics Letters》 SCIE CAS CSCD 2011年第7期111-113,共3页
We investigate an effective grooved 2D ion chip design and optimize the ratio between the size of the rf electrodes and the groove.We calculate the optimal size of the groove using the analytical model,which was intro... We investigate an effective grooved 2D ion chip design and optimize the ratio between the size of the rf electrodes and the groove.We calculate the optimal size of the groove using the analytical model,which was introduced by House,and the optimum result is obtained.We also obtain the simulated scattering points with the finite element analysis method.The analytical curve and simulated scattering points are coincident with each other.It is shown that this analytical model also fits for the grooved planar ion chip.Thus the optimum grooved 2D planar ion chip design could be obtained.It is effective for scalable quantum information processing. 展开更多
关键词 OPTIMUM PLANAR PROCESSING
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