论文标题
KAPITZA-DIRAC封锁：非高斯振荡器状态的确定性制备的通用工具
Kapitza-Dirac blockade: A universal tool for the deterministic preparation of non-Gaussian oscillator states
论文作者
论文摘要
谐波振荡器在最基本的量子系统中计数，在分子物理学，纳米颗粒捕获和量子信息处理中具有重要应用。它们的等距能量水平间距通常是一个理想的特征，但同时，如果目标是确定填充特定的特征状态，则面临挑战。在这里，我们展示了双重激光场中的过渡幅度的干扰如何抑制谐波振荡器状态（Kapitza-Dirac阻滞）的顺序攀爬并实现能量特征态，Schrödinger猫和其他非高斯州的选择性激发。该技术可以将谐波振荡器转换为连贯的两级系统，也可以用于构建大型摩肌转移光束分离器以用于物质波。为了说明该概念的普遍性，我们讨论了涵盖质量许多数量级的可行实验，从大分子的单个电子到介电纳米颗粒。
Harmonic oscillators count among the most fundamental quantum systems with important applications in molecular physics, nanoparticle trapping, and quantum information processing. Their equidistant energy level spacing is often a desired feature, but at the same time a challenge if the goal is to deterministically populate specific eigenstates. Here, we show how interference in the transition amplitudes in a bichromatic laser field can suppress the sequential climbing of harmonic oscillator states (Kapitza-Dirac blockade) and achieve selective excitation of energy eigenstates, Schrödinger cats and other non-Gaussian states. This technique can transform the harmonic oscillator into a coherent two-level system or be used to build a large-momentum-transfer beam splitter for matter-waves. To illustrate the universality of the concept, we discuss feasible experiments that cover many orders of magnitude in mass, from single electrons over large molecules to dielectric nanoparticles.
