RII Track-4: Quantum Control of Molecular Interactions with External Electromagnetic Fields: From Few to Many-Body Physics

RII Track-4：分子与外部电磁场相互作用的量子控制：从少体物理到多体物理

• 批准号: 1929190
• 负责人: Timur Tscherbul
• 金额: $ 21.29万
• 依托单位: Board of Regents, NSHE, obo University of Nevada, Reno
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2020
• 资助国家: 美国
• 起止时间: 2020-02-01 至 2023-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1929190&HistoricalAwards=false
• 关键词: RII; Track; Quantum; Control; Molecular

Ultracold molecular gases hold potential for transformative applications across physics and chemistry, ranging from quantum information processing and quantum simulation of novel materials to probing and controlling chemical reactions with external electromagnetic fields. This proposal explores two exciting frontiers recently made available by pioneering experiments at the host institution (JILA Physics Frontier Center). First, we intend to explore how the relative orientation of approaching molecules affects the outcome of a molecular collision or chemical reaction. Second, we propose to study the properties of an artificial crystal of polar molecules in an optical lattice, an exquisite quantum-many body system recently realized experimentally at the host institution. The proposed research will enhance our understanding of how electrons behave in real materials (a key goal of modern condensed-matter physics and material science) and to novel ways to control chemical reactions with electromagnetic fields (an important goal of modern chemical physics).This proposal aims to address two outstanding open problems in the physics and chemistry of cold molecular gases: (i) the lack of understanding and control of quantum stereodynamics of low-temperature molecular collisions in the presence of external electromagnetic fields, and (ii) the nature of the phase diagram of an ultracold gas of chemically reactive polar molecules in an optical lattice recently created for the first time at the host institution (JILA Physics Frontier Center). Using numerically exact quantum theory of molecular collisions, we propose to elucidate the effects of external fields on the stereodynamics of cold molecular collisions, with a focus on Ne-OH collisions currently studied experimentally at JILA. We also plan, by taking advantage of recent developments in computational condensed-matter physics, to explore the phase diagram of the extended dissipative Fermi-Hubbard model of ultracold KRb molecules in a two-dimensional optical lattice. The proposed research may lead to new ways to control the quantum dynamics of molecular collisions and to engineer novel quantum many-body states with ultracold molecules in optical lattices.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.

超声分子气体具有跨物理和化学的变革性应用的潜力，从量子信息处理以及对新材料的量子模拟到探测和控制外部电磁场的化学反应。该提案探讨了最近在主机机构（Jila Physics Frontier Center）开创性实验提供的两个令人兴奋的边界。首先，我们打算探讨接近分子的相对取向如何影响分子碰撞或化学反应的结果。其次，我们建议研究光学晶格中极性分子的人造晶体的性质，这是一种精致的量子量子体系系统，最近在宿主机构实验中实现了。 The proposed research will enhance our understanding of how electrons behave in real materials (a key goal of modern condensed-matter physics and material science) and to novel ways to control chemical reactions with electromagnetic fields (an important goal of modern chemical physics).This proposal aims to address two outstanding open problems in the physics and chemistry of cold molecular gases: (i) the lack of understanding and control of quantum stereodynamics of low-temperature molecular collisions在存在外部电磁场的情况下，以及（ii）在最近在托管机构（JILA Physics Frontier Center）首次创建的光学晶格中，化学反应性极性分子的超低气体的相图的性质。使用数值确切的分子碰撞量子理论，我们建议阐明外部场对冷分子碰撞的立体动力学的影响，重点是当前在JILA实验研究的NE-OH碰撞。我们还计划利用计算凝结物理学的最新发展，以探索二维光学晶格中Ultracold KRB分子的扩展耗散性费米 - 哈伯德模型的相图。拟议的研究可能导致新的方法来控制分子碰撞的量子动力学，并在光学晶格中使用超速分子来设计新型的量子多体状态。该奖项反映了NSF的法定任务，并被视为值得通过基金会的知识分子和更广泛的影响来审查审查标准来通过评估来通过评估来提供支持。