Inside Front Cover: Nonlinear Effect Analysis and Sensitivity Improvement in Spin Exchange Relaxation Free Atomic Magnetometers (Adv. Quantum Technol. 10/2024)

Nonlinear effect, which is induced by probe lightatom ensemble interaction, can significantly influence the performance of atomic magnetometers. The cover image shows the nonlinear interaction process between linear-polarized light and atomic ensemble operated in the spin-exchange relaxation-free regime. In article number 2400226, Jixi Lu, Bozheng Xing, and co-workers first propose that the nonlinear effect could be effectively suppressed by optimizing saturation parameters, which causes significant improvement in probe sensitivity of the atomic magnetometer.