Related Experiment Video
Updated: Jan 24, 2026

A Semiautomated ChIP-Seq Procedure for Large-scale Epigenetic Studies
Published on: August 13, 2020
Experimental study of the application feasibility of a novel chip-scale atomic clock scheme
Huifang Lin1, Yuan Tian2, Jiehua Chen2
1Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China.
Abstract:
We report on research into a microfabricated 87Rb vapor cell with differential detection. Elliptically polarized light is used to interact with alkali atoms to generate coherent population trapping (CPT) resonance, and the CPT signal is obtained by detecting the Faraday rotation effect with differential detection technology. To move closer to an actual chip-scale atomic clock (CSAC), we reduce the volume of the experimental apparatus and use a divergent laser beam to interact with the atoms. We obtain the short-term frequency stability of the CSAC based on the differential detection scheme and compare it with that of a conventional CSAC. The results show that the frequency stability is more than two times better than that of current commercial CSAC devices with the same power consumption and volume.
Related Concept Videos
The Z-Scheme of Electron Transport in Photosynthesis
Atomic Structure
Atomic Mass
Atomic Orbitals
Hybridization of Atomic Orbitals I
The Energies of Atomic Orbitals

