Physics Department, University of California, Berkeley, California 94720, USA.
Department of Physics, Auburn University, Auburn, Alabama 36849, USA.
Phys Rev Lett. 2014 Mar 28;112(12):121102. doi: 10.1103/PhysRevLett.112.121102. Epub 2014 Mar 25.
We describe a light-pulse atom interferometer that is suitable for any species of atom and even for electrons and protons as well as their antiparticles, in particular, for testing the Einstein equivalence principle with antihydrogen. The design obviates the need for resonant lasers through far-off resonant Bragg beam splitters and makes efficient use of scarce atoms by magnetic confinement and atom recycling. We expect to reach an initial accuracy of better than 1% for the acceleration of the free fall of antihydrogen, which can be improved to the part-per million level.
我们描述了一种适用于任何原子种类的光脉冲原子干涉仪，甚至适用于电子、质子及其反粒子，特别是可用于用反氢来检验爱因斯坦等效原理。该设计通过远距离共振布拉格分束器消除了对共振激光的需求，并通过磁约束和原子回收有效地利用了稀缺的原子。我们预计，反氢自由落体的加速度初始精度将优于 1%，可提高到百万分之几的水平。
