USTC Achieves Cold-Atom Comagnetometer
Recently, researchers at the University of Science and Technology of China (USTC), in collaboration with Lu Zhengtian and Xia Tian from the Hefei National Laboratory, realized a cold-atom comagnetometer using optical quantum control methods. The research team co-trapped two ytterbium isotopes in the same optical trap and synchronously measured their spin precession, achieving a magnetic field noise suppression factor exceeding 30,000. This achievement establishes a spin sensing platform with micron-scale spatial resolution, providing a new avenue for studying spin-dependent short-range interactions. The related research, titled "Cold-atom comagnetometry via optical control of spin states," was published in Nature Photonics on August 17.
2026-08-18
