Theoretical AMO Studies for Enhanced Understanding and Control of Emergent Quantum Physics

增强对新兴量子物理的理解和控制的理论 AMO 研究

• 批准号: 1806357
• 负责人: Erich Mueller
• 金额: $ 30万
• 依托单位: Cornell University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2018
• 资助国家: 美国
• 起止时间: 2018-09-01 至 2022-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1806357&HistoricalAwards=false
• 关键词: Theoretical; AMO; Studies; Enhanced; Understanding

The quantum mechanical behavior of individual particles (such as atoms, molecules, or photons) is well understood. The collective behavior of many such particles, however, is more complicated. The latest generation of Atomic, Molecular, and Optical experiments have revealed a number of open questions about such "emergent" physics. This theoretical physics project aims to answer some of these questions. In particular, it asks: "Can noise be used as a tool to control the behavior of quantum systems?" and "How does order develop in quantum systems?" Answering these fundamental questions would have wide impact on the development of materials, novel electronic devices, and quantum information processing technology, all of which rely on the behavior of collections of particles.There are two primary systems considered in these studies: (a) Light confined in optical cavities and (b) neutral atoms trapped in magnetic or optical potentials. The former system is ideal for exploring questions involving quantum dissipation: the central noise source, photon loss, is under experimental control. The broad question of using dissipation for quantum control will be addressed by systematically developing protocols which produce ever more complicated non-classical optical states. The neutral atom systems are ideal for studying ordering and kinetics. The project involves developing new computational tools (a generalization of the Density Matrix Renormalization Group), and combining these with the traditional tools of many-body physics to explore dynamics, equilibration, and ordering in isolated quantum systems.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.

单个粒子（如原子、分子或光子）的量子力学行为已经被很好地理解。 然而，许多这样的粒子的集体行为要复杂得多。 最新一代的原子、分子和光学实验揭示了许多关于这种“涌现”物理学的开放性问题。这个理论物理项目旨在回答其中的一些问题。 特别是，它提出了这样的问题：“噪声可以被用作控制量子系统行为的工具吗？量子系统中的秩序是如何发展的？这些基本问题的解决将对材料、新型电子器件和量子信息处理技术的发展产生广泛的影响，所有这些都依赖于粒子集合的行为。在这些研究中考虑了两个主要系统：（a）光被限制在光学腔中;（B）中性原子被捕获在磁势或光势中。 前一个系统是探索量子耗散问题的理想选择：中心噪声源，光子损失，处于实验控制之下。 利用耗散进行量子控制的广泛问题将通过系统地开发产生更复杂的非经典光学状态的协议来解决。中性原子体系是研究有序化和动力学的理想体系。 该项目涉及开发新的计算工具（密度矩阵重整化群的推广），并将其与多体物理学的传统工具相结合，以探索孤立量子系统中的动力学、平衡和有序。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

Collective dynamics and atom loss in bright-soliton matter waves

亮孤子物质波中的集体动力学和原子损失

• DOI: 10.1103/physreva.99.053618
• 发表时间: 2019
• 期刊: Physical Review A
• 影响因子: 2.9
• 作者: Longenecker, Daniel;Mueller, Erich J.
• 通讯作者: Mueller, Erich J.

Correlated insulators in twisted bilayer graphene

扭曲双层石墨烯中的相关绝缘体

• DOI: 10.1103/physrevb.103.125127
• 发表时间: 2021
• 期刊: Physical Review B
• 影响因子: 3.7
• 作者: Mandal, Ipsita;Yao, Jia;Mueller, Erich J.
• 通讯作者: Mueller, Erich J.

Unconventional valley-dependent optical selection rules and landau level mixing in bilayer graphene

• DOI: 10.1038/s41467-020-16844-y
• 发表时间: 2020-06
• 期刊: Nature Communications
• 影响因子: 16.6
• 作者: L. Ju;Lei Wang;Xiao Li;S. Moon;M. Ozerov;Zhengguang Lu;T. Taniguchi;Kenji Watanabe;E. Mueller;Fan Zhang;D. Smirnov;F. Rana;P. McEuen

Exact topological flat bands from continuum Landau levels

来自连续朗道能级的精确拓扑平带

• DOI: 10.1103/physreva.101.013629
• 发表时间: 2020
• 期刊: Physical Review A
• 影响因子: 2.9
• 作者: Dong, Junkai;Mueller, Erich J.
• 通讯作者: Mueller, Erich J.

Transport in the two-dimensional Fermi-Hubbard model: Lessons from weak coupling

二维 Fermi-Hubbard 模型中的输运：弱耦合的教训

• DOI: 10.1103/physrevb.104.165143
• 发表时间: 2021
• 期刊: Physical Review B
• 影响因子: 3.7
• 作者: Kiely, Thomas G.;Mueller, Erich J.
• 通讯作者: Mueller, Erich J.