Programmable Optical Tweezer Arrays for Studying Strongly Correlated Fermions

用于研究强相关费米子的可编程光镊阵列

• 批准号: 2110475
• 负责人: Waseem Bakr
• 金额: $ 51.78万
• 依托单位: Princeton University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-08-01 至 2024-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2110475&HistoricalAwards=false
• 关键词: Programmable; Optical; Tweezer; Arrays; Studying

General audience abstract:The development of materials with novel properties is a primary driver for new technologies. The behavior of the electrons in a material influences its electrical, thermal and optical properties. In particular, at low temperatures, the interplay of quantum mechanics and strong interactions between the electrons gives rise to spectacular collective phenomena. These include superconductivity (the lossless transport of electricity) as well as unusual forms of magnetism. A microscopic understanding of the physics of quantum materials is very useful in controlling their properties, but it is hindered by fundamental limitations on simulating large-scale quantum systems on classical computers. This award supports the development of a programmable analog quantum computer which can simulate electronic systems of up to a hundred particles, a task beyond the reach of even the fastest supercomputers. The analog quantum computer will consist of ultracold atoms, playing the role of the electrons, hopping and interacting in artificial crystals created with focused spots of laser light known as optical tweezers. Unlike other platforms for electronic quantum simulation, the crystal geometry is programmable in software, allowing on-demand simulations of a wide range of model electronic systems. The main outcome of the research will be a major advance in the ability to create, control, and study interacting quantum systems. The research will also train graduate and undergraduate students in the field of quantum science and prepare them for careers in industry, national labs, and academia. Technical audience abstract:The deterministic preparation, control, and readout of large ensembles of interacting quantum particles remains a frontier in modern experimental physics. Recent progress in this arena has enhanced our understanding of many-body systems and stimulated advances in quantum computing. In particular, ultracold neutral atoms in optical lattices, due to the ease of tailoring their Hamiltonians, have provided valuable insights on a wide range of topics including many-body localization, entanglement dynamics and driven many-body systems. However, two challenges have impeded quantum simulations with fermionic lattice gases from reaching their full potential: the preparation of states with entropies low enough to realize strongly-correlated phases of interest and “on-demand” reconfigurability of trapping potentials at the single-site level. This award funds the development of techniques to prepare low-entropy states of strongly-interacting fermionic atoms in programmable optical tweezer arrays, with single-site readout from quantum gas microscopy. The research will focus on realizing correlated states in one-dimensional and two-leg Fermi-Hubbard ladder systems, including interacting topological states and d-wave resonating valence bond states. This will be an important stepping stone for future work on preparing low-entropy states in 2D Hubbard tweezer arrays.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.

普通受众摘要：带有新型属性的材料的开发是新技术的主要驱动力。材料中电子的行为影响其电气，热和光学性质。特别是，在低温下，量子力学的相互作用和电子产品之间的强相互作用会导致壮观的集体现象。这些包括超导性（无损运输）以及异常的磁性形式。对量子材料物理学的微观理解对于控制其性质非常有用，但是由于基本限制模拟古典计算机上的大规模量子系统而受到阻碍。该奖项支持可编程模拟量子计算机的开发，该计算机可以模拟最多一百个粒子的电子系统，这是超出最快的超级计算机的任务。模拟量子计算机将由超电原子组成，扮演电子的作用，在人造晶体中跳跃和相互作用，该晶体以聚焦的激光光斑（称为光学镊子）创建。与其他用于电子量子模拟的平台不同，晶体几何形状可以在软件中编程，从而可以对广泛的模型电子系统进行按需模拟。研究的主要结果将是创建，控制和研究相互作用量子系统的能力的重大进步。这项研究还将在量子科学领域培训毕业生和本科生，并为行业，国家实验室和学术界的职业做好准备。技术受众摘要：大型相互作用量子粒子合奏的确定性准备，控制和读数仍然是现代实验物理学的前沿。该领域的最新进展增强了我们对多体系统的理解，并刺激了量子计算的进步。尤其是，由于易于调整汉密尔顿人的易于量身定制，在光学晶格中的超低中性原子为包括多体定位，纠缠动态和驱动的多体系统在内的广泛主题提供了宝贵的见解。然而，两个挑战阻碍了用费米子晶状体气体产生全部潜力的量子模拟：熵的状态足够低，以实现感兴趣的强烈相关的阶段，并在单层水平上捕获潜力的“需求”可重新配置性。该奖项资助了技术在可编程光学镊子阵列中使用强烈相互交互的费米原子的低渗透状态的发展，并具有量子气显微镜的单点读数。这项研究将着重于实现一维和两腿费米 - 哈伯德阶梯系统中的相关状态，包括相互作用的拓扑状态和D-WAVE共鸣式债券。这将是为未来在2D哈伯德tweezer阵列中准备低进入状态的工作的重要垫脚石。该奖项反映了NSF的法定任务，并通过使用基金会的知识分子和更广泛的影响评估标准来评估NSF的法定任务。

项目成果

Realization of a Fermi-Hubbard Optical Tweezer Array

费米-哈伯德光镊阵列的实现

• DOI: 10.1103/physrevlett.128.223202
• 发表时间: 2022
• 期刊: Physical Review Letters
• 影响因子: 8.6
• 作者: Spar, Benjamin M.;Guardado-Sanchez, Elmer;Chi, Sungjae;Yan, Zoe Z.;Bakr, Waseem S.
• 通讯作者: Bakr, Waseem S.