本项目为双原子干涉的实验研究，从2007年1月到2009年12月，经过3年的努力，我们基本完成了课题任务书提出的各项实验。.我们完成的工作包括：实现了铷原子87Rb和85Rb两种同位素工作的原子喷泉,冷原子温度分别为4μK、3μK，下落的信号原子数均在E7量级；通过光纤调制的方式实现了拉曼相干激光束；实现了87Rb和85Rb两种同位素的微波干涉仪，分别获得了干涉条纹（谱线宽度分别为1Hz、2Hz），并实现闭环锁定；实现了利用空间微波辐射和拉曼激光测试磁场；进行了拉曼干涉实验，从实验上证明了利用铷的两种同位素喷泉进行原子干涉实验的可行性。.在85Rb干涉实验中，我们发现目前国际公认的其基态超精细跃迁频率存在5.8Hz的误差，其预期的测试精度有望比过去提高3-4数量级。

The project is the research of dual-material atomic fountain interference experiments.It began at January 2007 and finished at December 2009. By endeavor of three years, we achieves the contents in requisition..Following works have been done: a device has been working either as an 87Rb isotope fountain or as an 85Rb isotope fountain, the temperatures of two isotopes is 4μK and 3μK respectively, and the numbers of which are at the magnitudes of E7. Laman interference beams is obtained by controlling a fiber modulator. Experiments of 87Rb and 85Rb microwave interferometers fit satisfying results, the linwidths of interfering fringes is 1Hz and 2Hz respectively, and which are used to lock-in the microwave frequency. Experiments of Laman interfering reach the prespectiveness, the results are applied to measure the magnetic intensity of intefering zone and are certificated by another way which detect the magnetic intensity by using spatial radial microwave, the result also demonstrates a scheme of 87Rb-85Rb aomic fountain interference is feasible..At the interfering experiments of 85Rb, an error of 5.8Hz is found between the well-known data and the true value of ground hyperfine states splitting of 85Rb, and the uncertainty of the result will better than the old data by 3-4 magnitudes.

本项目为双原子干涉的实验研究，从2007年1月到2009年12月，经过3年的努力，我们基本完成了课题任务书提出的各项实验。我们完成的工作包括：实现了铷原子87Rb和85Rb两种同位素工作的原子喷泉,冷原子温度分别为4μK、3μK，下落的信号原子数均在E7量级；通过光纤调制的方式实现了拉曼相干激光束；实现了87Rb和85Rb两种同位素的微波干涉仪，分别获得了干涉条纹（谱线宽度分别为1Hz、2Hz），并实现闭环锁定；实现了利用空间微波辐射和拉曼激光测试磁场；进行了拉曼干涉实验，从实验上证明了利用铷的两种同位素喷泉进行原子干涉实验的可行性。在85Rb干涉实验中，我们发现目前国际公认的其基态超精细跃迁频率存在5.8Hz的误差，其预期的测试精度有望比过去提高3-4数量级。