Wang Zhiping, Chen Jinyu, Yu Benli
Opt Express. 2017 Feb 20;25(4):3358-3372. doi: 10.1364/OE.25.003358.
We investigate the two-dimensional (2D) and three-dimensional (3D) atom localization behaviors via spontaneously generated coherence in a microwave-driven four-level atomic system. Owing to the space-dependent atom-field interaction, it is found that the detecting probability and precision of 2D and 3D atom localization behaviors can be significantly improved via adjusting the system parameters, the phase, amplitude, and initial population distribution. Interestingly, the atom can be localized in volumes that are substantially smaller than a cubic optical wavelength. Our scheme opens a promising way to achieve high-precision and high-efficiency atom localization, which provides some potential applications in high-dimensional atom nanolithography.
我们通过在微波驱动的四能级原子系统中利用自发产生的相干性来研究二维（2D）和三维（3D）原子定位行为。由于原子 - 场相互作用与空间有关，发现通过调整系统参数、相位、幅度和初始布居分布，可以显著提高2D和3D原子定位行为的探测概率和精度。有趣的是，原子可以被定位在体积远小于立方光学波长的区域。我们的方案为实现高精度和高效率的原子定位开辟了一条有前景的途径，这在高维原子纳米光刻中具有一些潜在应用。
