Nonequilibrium Dynamics and Site-Resolved Imaging in a Three-Dimensional Spinor Bose-Hubbard Model Quantum Simulator

三维旋量玻色-哈伯德模型量子模拟器中的非平衡动力学和位点分辨成像

• 批准号: 2207777
• 负责人: Yingmei Liu
• 金额: $ 39.48万
• 依托单位: Oklahoma State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-09-01 至 2025-08-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2207777&HistoricalAwards=false
• 关键词: Nonequilibrium; Dynamics; Site; Resolved; Imaging

Physical modeling of three-dimensional (3D) strongly correlated many-body systems such as superconductors is a fast-moving research frontier with immediate applications spanning areas from the development of novel materials to quantum state preparation. Classical computers - even fast supercomputers - cannot perform accurate simulations/studies of these systems due to the intrinsic complexity of the systems and the limitations of existing numerical techniques. This project will implement a 3D highly-programmable quantum simulator using a sodium Bose-Einstein condensate (BEC) and experimentally demonstrate that this quantum simulator can be more powerful than its classical counterpart in studying such intricate many-body systems. BECs are ultra-cold gases in which atoms become essentially indistinguishable from one another, allowing for observations of quantum behaviors at a macroscopic level. Research goals of this project are both of fundamental interest for advancing our understanding on quantum physics and of technological significance. The principal investigator (PI) will integrate research and teaching by involving undergraduate and graduate students into research projects, and endeavor to broaden the participation of under-represented groups including Native American students and women in physics. The PI will also organize one-day workshops for local high school students to get hands-on experience with state-of-the-art quantum physics equipment and techniques. This project will encourage more students to pursue a career in science and technology. This project will perform experimental studies on many-body systems in a 3D spinor Bose-Hubbard model quantum simulator consisting of an antiferromagnetic sodium spinor BEC confined in an optical lattice. Possessing spin degrees of freedom and exhibiting magnetic order and superfluidity, this quantum simulator is highly programmable with a remarkable degree of control over many parameters, such as temperature, spin, density, and dimensionality. The experimental studies include investigating out-of-equilibrium spin and spatial dynamics and non-exponential tunneling with spinor BECs in moving/driven lattices and achieving site-resolved spatial resolution via a quantum gas magnifier imaging technique to directly detect spatial distributions of 3D quantum systems and explore previously inaccessible microscopic regimes.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.

三维 (3D) 强关联多体系统（例如超导体）的物理建模是一个快速发展的研究前沿，其直接应用涵盖从新型材料开发到量子态制备等领域。由于系统固有的复杂性和现有数值技术的限制，经典计算机 - 即使是快速的超级计算机 - 无法对这些系统进行精确的模拟/研究。该项目将使用玻色-爱因斯坦凝聚钠 (BEC) 实现 3D 高度可编程量子模拟器，并通过实验证明该量子模拟器在研究此类复杂的多体系统时比经典模拟器更强大。 BEC 是一种超冷气体，其中原子之间基本上无法区分，从而可以在宏观层面上观察量子行为。该项目的研究目标既对增进我们对量子物理的理解具有根本意义，又具有技术意义。首席研究员（PI）将通过让本科生和研究生参与研究项目来整合研究和教学，并努力扩大包括美国原住民学生和物理学领域女性在内的代表性不足群体的参与。 PI 还将为当地高中生组织为期一天的研讨会，让他们亲身体验最先进的量子物理设备和技术。该项目将鼓励更多学生从事科学技术事业。 该项目将在 3D 旋量 Bose-Hubbard 模型量子模拟器中对多体系统进行实验研究，该模拟器由限制在光学晶格中的反铁磁钠旋量 BEC 组成。该量子模拟器具有自旋自由度并表现出磁序和超流性，具有高度可编程性，对许多参数（例如温度、自旋、密度和维度）具有显着的控制程度。实验研究包括研究运动/驱动晶格中的非平衡自旋和空间动力学以及自旋 BEC 的非指数隧道效应，并通过量子气体放大器成像技术实现位点分辨空间分辨率，以直接检测 3D 量子系统的空间分布该奖项反映了 NSF 的法定使命，并通过使用基金会的智力价值和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

Quench-induced nonequilibrium dynamics of spinor gases in a moving lattice

运动晶格中自旋气体淬灭引起的非平衡动力学

• DOI: 10.1103/physreva.107.053311
• 发表时间: 2023-05
• 期刊: Physical Review A
• 影响因子: 2.9
• 作者: Hardesty;Guan, Q.;Austin, J. O.;Blume, D.;Lewis;Liu, Y.
• 通讯作者: Liu, Y.