超冷原子的虚磁场
Imaginary magnetic fields for ultracold atoms
浏览论文内容
中文总结 AI 辅助
提出四能级方案，通过拉曼耦合和态依赖损失为超冷原子产生均匀虚磁场，解析推导高斯波包动力学并验证绝热投影方法的适用性。
中文摘要 AI 辅助
我们提出一个四能级方案，利用拉曼耦合和态依赖的粒子损失为超冷原子产生均匀的虚磁场。消除两个有损的辅助态，并随后投影到剩余两个拉曼缀饰原子态之一上，原子运动受到一个具有恒定旋度的虚矢量势影响，对应于空间均匀的虚合成磁场。我们解析推导了原子在这种合成磁场中的高斯波包动力学，并研究了依赖于宽度的输运，这是非厄米系统所特有的。我们发现两能级非厄米哈密顿量与绝热投影描述之间的数值一致性，证实了后者绝热方法的适用性。
英文摘要
We propose a four-level scheme for generating a uniform imaginary magnetic field for ultracold atoms using Raman coupling and state-dependent particle losses. Eliminating two lossy auxiliary states and subsequently projecting onto one of the two remaining Raman dressed atomic states, the atomic motion is affected by an imaginary vector potential with a constant curl corresponding to a spatially uniform imaginary synthetic magnetic field. We analytically derive the Gaussian wavepacket dynamics for atoms in such a synthetic magnetic field and study the width-dependent transport, which is unique to non-Hermitian systems. We find numerical agreement between the two-level non-Hermitian Hamiltonian and the adiabatic projection description, confirming the applicability of the latter adiabatic approach.
发表机构
- Institute of Theoretical Physics and Astronomy, Faculty of Physics, Vilnius University（维尔纽斯大学物理学院理论物理与天文研究所）
机构由 AI 辅助整理，请以论文原文为准。
