Abstract
Atomic nonlinear interferometry has wide applications in quantum metrology and quantum information science.Here we propose a nonlinear time-reversal interferometry scheme with high robustness and metrological gain based on the spin squeezing generated by arbitrary quadratic collective-spin interaction,which could be described by the Lipkin-Meshkov-Glick(LMG)model.We optimize the squeezing process,encoding process,and anti-squeezing process,finding that the two particular cases of the LMG model,one-axis twisting and two-axis twisting outperform in robustness and precision,respectively.Moreover,we propose a Floquet driving method to realize equivalent time reverse in the atomic system,which leads to high performance in precision,robustness,and operability.Our study sets a benchmark for achieving high precision and high robustness in atomic nonlinear interferometry.
基金项目
National Key R&D Program of China(2023YFA1407600)
National Natural Science Foundation of China(12275145)
National Natural Science Foundation of China(92050110)
National Natural Science Foundation of China(91736106)
National Natural Science Foundation of China(11674390)
National Natural Science Foundation of China(91836302)
NETL
NSTL
万方数据