弱等效原理的原子干涉检验
（Test Weak Equivalence Principle with Atom Interferfometry）
科研骨干：周林、陈曦、高东峰、何川、闫思彤、徐润东
（Key Researchers：Zhou Lin, Chen Xi, Gao Dong-Feng, He Chuan, Yan Si-Tong, Xu Run-Dong）
The quest to unify quantum mechanics and gravity is one of the frontiers of science. Precision measurement physics research continuously improves measurement accuracy to test the applicability of existing physical laws, with the aim of discovering new physics. By precisely manipulating two-component (Rb-85, Rb-87) cold atomic matter-wave interference, we have developed novel methods for atomic interferometers, consistently enhancing the performance of scientific instruments. This has enabled high-precision, multi-attribute tests of the Einstein Equivalence Principle, a fundamental postulate of general relativity.
长基线原子干涉仪
（Long-Baseline Atom Interferometers）
The 10-meter fountain-type high-precision atomic interferometer for WEP experiments.
The10-meter fountain type dual-species atom interferometer for 85Rb and 87Rb has been successfully realized, and the dual-species atomic fountain signal has been obtained (L. Zhou, et al., Gen. Relat. Gravit. 43 1931, 2011).
弱等效原理检验
（Weak Equivalence Principle Tests）
- 质量检验 （Mass Tests）
A four-wave, dual-Raman diffraction atomic interference scheme was proposed, which resolved issues of multi-frequency optical crosstalk between the two atomic species and Raman laser noise. This scheme improved the precision of atomic tests of the equivalence principle to the 10–8 level (L. Zhou, et al., Phys. Rev. Lett. 115, 013004, 2015).
- 质量-能量联合检验 （Mass-Enengy Jiont Tests）
Furthermore, a joint mass-energy test of the equivalence principle was proposed and realized, achieving a precision at 10–10 level(L. Zhou, et al., Phys. Rev. A. 104, 022822, 2021).
- 空间站检验（Heteronuclear Single-Atom Arrays）
We use atom interferometers for fundamental physics research in microgravity. Our space cold atom interferometer (M. He, et al., npj Microgravity 9, 58, 2023)has achieved the world's first cold atom interferometric gyroscope under space microgravity conditions(J. T. Li, et al., Natl. Sci. Rev. 12, nwaf012, 2025) and is currently conducting experiments to test the equivalence principle in space.