论文标题
与混合场的超频轴离轴原子定位
Ultraprecise off-axis atom localization with hybrid fields
论文作者
论文摘要
原子定位可以对原子位置进行高精度成像，该成像为基本和应用科学提供了广泛的应用。在目前的工作中，我们提出了一个方案，以实现在三级lambda型系统中实现二维离轴原子定位。从使用一个高斯梁和一个laguerre-gaussian梁组成的混合耦合场中受益，我们的方案表明，原子可以通过高空间分辨率在任意位置定位。考虑到现实的实验参数，我们的数值模拟预测原子可以精确地定位，空间分辨率约为200 nm，在径向距离的范围为少数微米与光束核心。我们的结果为将原子定位在二维系统中提供了一种更灵活的方法，可能会使一步更接近纳米尺度的原子光刻和超脑显微镜铺路。
Atom localization enables a high-precision imaging of the atomic position, which has provided vast applications in fundamental and applied science. In the present work, we propose a scheme for realizing two-dimensional off-axis atom localization in a three-level Lambda-type system. Benefiting from the use of a hybrid coupling field which consists of one Gaussian beam and one Laguerre-Gaussian beam, our scheme shows that the atoms can be localized at arbitrary position with a high spatial resolution. Taking account of realistic experimental parameters, our numerical simulation predicts that the atoms can be precisely localized with a spatial resolution of ~200 nm in the range of a radial distance of a few micrometers to the beam core. Our results provide a more flexible way to localize atoms in a two-dimensional system, possibly paving one-step closer to the nanometer-scale atom lithography and ultraprecise microscopy.
