论文标题
大面积原子干涉法的双性选择脉冲
Bi-selective pulses for large-area atom interferometry
论文作者
论文摘要
我们介绍了大型转移原子干涉仪增强“镜像”脉冲的设计，这些脉冲随着波袋动量差异的增加而保持忠诚度。这些双重选择的脉冲，使用最佳控制方法定制为发展的双模式动量分布，应允许更大的干涉仪面积，从而提高惯性测量敏感性，而无需升高的狂犬病频率或扩展的频率呼吸。使用经过实验验证的模型，我们模拟了脉冲设计的应用到大型摩肌转移原子干涉仪中，使用$^{85} $ rb的激光冷却原子样品中的刺激的拉曼过渡在1 $ k $ k中的应用。在波袋分开42个光子后坐力矩形之后，我们的脉冲的边缘对比度为90％，而对于绝热的快速通过和常规的$π$脉冲，对比度小于10％。此外，我们展示了如何适应这些脉冲来抑制限制其他宽带脉冲方案的有害的非谐振激发。
We present designs for the augmentation 'mirror' pulses of large-momentum-transfer atom interferometers that maintain their fidelity as the wavepacket momentum difference is increased. These bi-selective pulses, tailored using optimal control methods to the evolving bi-modal momentum distribution, should allow greater interferometer areas and hence increased inertial measurement sensitivity, without requiring elevated Rabi frequencies or extended frequency chirps. Using an experimentally validated model, we have simulated the application of our pulse designs to large-momentum-transfer atom interferometry using stimulated Raman transitions in a laser-cooled atomic sample of $^{85}$Rb at 1 $μ$K. After the wavepackets have separated by 42 photon recoil momenta, our pulses maintain a fringe contrast of 90% whereas, for adiabatic rapid passage and conventional $π$ pulses, the contrast is less than 10%. Furthermore, we show how these pulses may be adapted to suppress the detrimental off-resonant excitation that limits other broadband pulse schemes.
