Quantum Dynamics with Cold Atoms

该项目将开发和提供公开可用的计算机代码和文档，旨在帮助使用高级编程语言和高性能计算机（HPC）解决量子动力学问题。 这些资源将使研究人员能够更有效地利用国家对HPC的投资，推进科学发现和创新的步伐。特别令人感兴趣的是量子动力学在超冷原子和核天体物理学中的应用。例如，需要量子流体力学理论来正确描述最近对受限超冷气体的实验，也可以为解决40年之久的脉冲星故障之谜奠定基础，脉冲星故障是中子星旋转的突然增加，即使它们不断失去角动量。本科生和研究生都将接受分析和高性能计算技能的培训，以便在学术界，国家实验室或工业界的未来追求中取得成功。 一个超流体探测器将被开发出来，使人们能够体验我们量子宇宙的迷人特性。这项理论工作将被应用于华盛顿州立大学（WSU）和华盛顿大学（UW）的三种类型的冷原子实验。 第一种是玻色-爱因斯坦凝聚体（BEC）与各种相互作用，如诱导自旋轨道耦合。 在这里，各种奇异的现象将被研究，包括负质量流体动力学和孤子动力学。 理论方法将根据需要进行改进，以纳入有限温度和耗散的影响。 第二类应用是与耦合超流体的实验，探索夹带和其他超流体相互作用的物理。 最后，该项目将探索费米超流体实验是否以及如何模拟中子星中的质子和中子超流体。 理解这些量子现象将直接推动冷原子领域的发展，解锁量子技术的潜在应用，例如改进传感和量子计算。 基础理论也将推动其他领域，包括凝聚态，非线性光学，核理论和核天体物理学。

This project will develop and provide publicly available computer codes and documentation intended to assist in solving problems in quantum dynamics using high-level programming languages and high-performance computers (HPC). These resources will enable researchers to more effectively utilize the nation's investment in HPC, advancing the pace of scientific discovery and innovation. Of particular interest are applications of quantum dynamics to both ultracold atoms and to nuclear astrophysics. For example, a theory of quantum hydrodynamics is needed to properly describe recent experiments with confined ultracold gases and could also lay the foundation for a resolution of the 40-year old mystery of pulsar glitches, sudden increases in the spinning of neutron stars even though they continually lose angular momentum. Both undergraduate and graduate students will be trained with the analytical and high-performance computational skills to succeed in their future pursuits in academia, at national laboratories, or in industry. A superfluid explorer will be developed, enabling people to experience the fascinating properties of our quantum universe.This theoretical work will be applied to three types of cold-atom experiments at Washington State University (WSU) and the University of Washington (UW). The first are Bose-Einstein condensates (BECs) with various interactions such as induced spin-orbit coupling. Here, a variety of exotic phenomena will be studied, including negative-mass hydrodynamics, and soliton dynamics. The theoretical approach will be refined as required to incorporate the effects of finite temperature and dissipation. The second class of applications is to experiments with coupled superfluids which explore the physics of entrainment and other superfluid interactions. Finally, the project will explore whether and how experiments with fermionic superfluids can model the proton and neutron superfluids in neutron stars. Understanding these quantum phenomena will directly advance the field of cold atoms, unlocking potential applications in quantum technology, such as improved sensing and quantum computing. The underlying theory will also advance other fields, including condensed matter, non-linear optics, nuclear theory, and nuclear astrophysics.