Fluid Dynamics in Uniform Fermi Gases

均匀费米气体中的流体动力学

• 批准号: 2006234
• 负责人: John Thomas
• 金额: $ 60.02万
• 依托单位: North Carolina State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2020
• 资助国家: 美国
• 起止时间: 2020-08-01 至 2024-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2006234&HistoricalAwards=false
• 关键词: Fluid; Dynamics; Uniform; Fermi; Gases; Fluid; Dynamics; Uniform; Fermi; Gases

General audience abstractThis project will explore nearly perfect fluid flow in a “designer” quantum system, comprising a unique ultracold gas of atoms, contained in a box made entirely of laser light. The atoms used in these tabletop experiments feature experimentally adjustable attraction or repulsion, from very weak to very strong, enabling measurements that impact theories in intellectual disciplines well outside of atomic physics. The contained atoms model new materials, such as super-high temperature superconductors that operate far above room temperature, which will one day enable energy-saving power lines and magnetically levitated trains. Students and post-doctoral associates will design new optical systems, new computer control and mechanical systems, and study electrodynamics and quantum mechanics, broadly training them for challenges arising in science and technology.Technical audience abstractThe experiments will study the fluid dynamics of a Fermi gas of Li-6 atoms near a collisional (Feshbach) resonance, which enables magnetic control of atom-atom interactions. The ultracold Fermi gas is contained, perturbed, and imaged in a designer optical potential, which is generated using two digital micro-mirror arrays. By imaging the atom density profile as a function of time, the new experiments will measure the hydrodynamic linear response and transport properties as a function of temperature, interaction strength, and spin-imbalance. Imaging the trapped cloud in a 1D linearly varying potential will determine the equation of state. Designer optical potentials also will be used for in-situ imaging of shock waves as a function of interaction strength, density profile and temperature profile.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

总受众摘要该项目将在“设计师”量子系统中探索几乎完美的流体流量，并完成完全由激光灯制成的盒子中的独特的超低原子气体。这些桌面实验中使用的原子具有实验可调节的吸引力或排斥，从非常弱到非常强大，有助于测量，从而影响了智力学科中的理论，在原子理以外。包含的原子模型新材料，例如高于室温的超高温度超导体，这将有一天能够提供节能电力线和磁性悬浮的火车。学生和博士后伴侣将设计新的光学系统，新的计算机控制和机械系统，并研究电子和量子机械，并广泛培训它们在科学和技术中引起的挑战。技术听众摘要研究将研究Li-6原子的Fermi气体的流体动力学，附近（feshbach Bach Bach Bach Bach Bach Bach Bach），这使得与互动的共振能力相互控制。在设计器的光电位中包含，扰动和成像，使用两个数字微型摩尔阵列生成。通过将原子密度曲线作为时间的函数进行成像，新实验将测量流体动力线性响应和传输特性，这是温度，相互作用强度和自旋不足的函数。成像1D线性变化电势中的被捕获的云将决定状态的等效性。设计师的光电位还将用于冲击波的原位成像，这是相互作用强度，密度曲线和温度曲线的函数。该奖项反映了NSF的法定任务，并通过使用该基金会的知识分子和更广泛的影响来评估NSF的法定任务。