AI 中文总结
本研究将红、蓝失谐多普勒冷却的互补动力学结合，提出可编程分停协议，通过递归操作实现冷原子实空间图案形成，成功制备出8原子团一维阵列与64原子团二维正方形阵列。
AI 中文摘要
红失谐多普勒冷却会使原子运动减速至零速度，而蓝失谐光产生的加速度会将冷原子云分离成有限速度的原子团。本研究将这些互补动力学结合，提出一种用于实空间图案形成的可编程分停协议：每个阶段中，蓝失谐脉冲会分裂现有原子团并使其相互远离，随后的红失谐脉冲将原子团质心速度回调至接近零，形成空间分辨的静止原子团；递归重复该过程可使实空间原子团数量倍增。研究采用包含一维和二维吸收与自发发射反冲的随机光子跳跃模拟对动力学建模，利用88Sr的689nm 1S0→3P1跃迁的实验实际参数，成功演示了8个原子团的一维阵列和64个原子团的二维正方形阵列。
英文摘要
Red-detuned Doppler cooling decelerates atomic motion toward zero velocity, whereas blue-detuned light produces acceleration that separates a cold cloud into finite-velocity packets. Here we combine these complementary dynamics in a programmable split-stop protocol for real-space pattern formation. During each stage, a blue-detuned pulse splits existing packets and drives them apart, while a subsequent red-detuned pulse returns their center-of-mass velocities close to zero, results in spatially resolved stationary packets. Repeating this process recursively multiplies the number of packets in real space. We model the dynamics using stochastic photon-jump simulations that include absorption and spontaneous-emission recoil in one and two dimensions. Using experimentally realistic parameters for the $689~\mathrm{nm}$ ${}^{1}S_{0}\rightarrow{}^{3}P_{1}$ transition of ${}^{88}\mathrm{Sr}$, we demonstrate an 8-packet one-dimensional array and a 64-packet two-dimensional square array.
Comments9 pages, 4 figures
