Atomic interferometer with amplitude gratings of light and its applications to atom based tests of the equivalence principle -: art. no. 240404
Atomic interferometer with amplitude gratings of light and its applications to atom based tests of the equivalence principle -: art. no. 240404
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DOI：
10.1103/physrevlett.93.240404
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发表时间：
2004-12-10
影响因子：
8.6
通讯作者：
Weitz, M
中科院分区：
文献类型：
--
作者：
Fray, S;Diez, CA;Weitz, M
我们研制了一种物质波干涉仪，其原理是利用光的有效吸收光栅产生的原子衍射。在原子喷泉冷铷原子装置中，用干涉仪在原子基础上进行了等效原理的测试。对Rb-85和Rb-87两种同位素的重力加速度进行了比较，得到了delta /g=(1.2+/-1.7)x10（-7）。我们还对两种不同超精细状态下的原子进行了微分自由落体测量，得到了Deltag/g=(0.4+/-1.2)x10（-7）的结果。
We have developed a matter wave interferometer based on the diffraction of atoms from effective absorption gratings of light. In a setup with cold rubidium atoms in an atomic fountain the interferometer has been used to carry out tests of the equivalence principle on an atomic basis. The gravitational acceleration of the two isotopes Rb-85 and Rb-87 was compared, yielding a difference Deltag/g=(1.2+/-1.7)x10(-7). We also perform a differential free fall measurement of atoms in two different hyperfine states, and obtained a result of Deltag/g=(0.4+/-1.2)x10(-7).