标题： 使用脉冲参数共振抑制自旋交换弛豫 显示英文标题

标题： Suppression of Spin-Exchange Relaxation Using Pulsed Parametric Resonance

摘要： 我们证明，在近地球尺度磁场下，通过在一系列AC耦合的2-π脉冲中对碱金属原子自旋进行修饰，可以有效地消除拉莫尔进动的自旋交换去相位。脉冲占空比的因子降低了自旋交换碰撞对光谱线宽的贡献。我们实验上展示了在高达0.1高斯的磁场中的共振横向泵浦，并给出了被抑制的自旋交换弛豫的实验测量结果，并显示了相对于光窄化标量磁力计增强的磁力计响应。 显示英文摘要

摘要： We demonstrate that spin-exchange dephasing of Larmor precession at near-earth-scale fields is effectively eliminated by dressing the alkali-metal atom spins in a sequence of AC-coupled 2-pi pulses, repeated at the Larmor precession frequency. The contribution of spin-exchange collisions to the spectroscopic line width is reduced by a factor of the duty cycle of the pulses. We experimentally demonstrate resonant transverse pumping in magnetic fields as high as 0.1 Gauss, present experimental measurements of the suppressed spin-exchange relaxation, and show enhanced magnetometer response relative to a light-narrowed scalar magnetometer.