论文标题
1D和2D离子库仑晶体的极化梯度冷却
Polarization-gradient cooling of 1D and 2D ion Coulomb crystals
论文作者
论文摘要
我们介绍了有关线性Paul陷阱中Ca $^+$ Multi-Ion库仑晶体的极化梯度冷却的实验。集体运动模式的极化梯度冷却，其特征向量与陷阱的对称轴重叠，这是通过两个反向传播激光束具有相互正交线性极化的两种反向传播激光束实现的，这些线性是从s $ _ {1/2} $ _ {1/2} $ _ p $ _ _ {1/2} $ _ {1/2} $ {1/2} $ _ {1/2} $ _ {1/2} $ _ {1/2} $ _ {1/2} $ {1/2} $ _ {1/2} $ {1/2} $ {1/2} $ {1/2} $ {1/2} $ {1/2} $ {1/2} $ {1/2} $ {我们证明了使用22个离子的锯齿形构型中最多51个离子和2D-晶体的线性链冷却。将冷却结果与数值模拟和在移动极化梯度中冷却模型的预测进行了比较。
We present experiments on polarization gradient cooling of Ca$^+$ multi-ion Coulomb crystals in a linear Paul trap. Polarization gradient cooling of the collective modes of motion whose eigenvectors have overlap with the symmetry axis of the trap is achieved by two counter-propagating laser beams with mutually orthogonal linear polarizations that are blue-detuned from the S$_{1/2}$ to P$_{1/2}$ transition. We demonstrate cooling of linear chains of up to 51 ions and 2D-crystals in zig-zag configuration with 22 ions. The cooling results are compared with numerical simulations and the predictions of a simple model of cooling in a moving polarization gradient.
