LEAPS-MPS: Dynamics of Quantum Information in Strongly Interacting Many-Body Systems

LEAPS-MPS：强相互作用多体系统中的量子信息动力学

• 批准号: 2317030
• 负责人: Bihui Zhu
• 金额: $ 18.88万
• 依托单位: University of Oklahoma Norman Campus
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-09-01 至 2025-08-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2317030&HistoricalAwards=false
• 关键词: LEAPS; MPS; Dynamics; Quantum; Information

Understanding how quantum information propagates across many interacting components and how to control it to make improved quantum devices is an important challenge. Systems with a collection of quantum particles can provide powerful resources for efficient computation and enable properties distinct from individual components. However, such quantum mechanical effects are usually fragile to system imperfections and environmental perturbations and are challenging to harness. This research aims to address the challenge through developing new protocols to understand the dynamical process in systems relevant to present quantum platforms and uncover new types of many-body phenomena robust to these environmental effects, leveraging recent advances in atomic physics and quantum information science. Alongside these research goals, this project will implement a diverse set of education and outreach activities to train and recruit graduate, undergraduate, and high school students, increasing their literacy in quantum science and preparing them as the next generation workforce in science and technology. The past decades have witnessed remarkable progress in building controllable quantum platforms, such as those using cold atoms and ions. These platforms open exciting opportunities to examine complex quantum systems beyond equilibrium, where the dynamics of entanglement and correlations remain largely poorly understood. This project seeks to address fundamental questions regarding the dynamics of quantum information in many-body systems and to explore new classes of dynamical behaviors. To this end, this research project will include two intercorrelated thrusts. The first thrust will investigate the growth of quantum correlations in spin ensembles described by nonintegrable lattice Hamiltonians relevant to cold-atom platforms. This part of study will quantitatively analyze the unitary many-body dynamics in various geometries and target practical procedures that can be realized in current experiments using cold atoms. The second thrust will focus on systems subject to environmental effects, through investigating quantum circuits with nonunitary measurement operations. This part of the study will employ a combination of analytical tools and state-of-the-art numerical calculations to characterize the different dynamical phases and entanglement structures generated. These research directions can further provide guidance for efficiently steering many-body systems into quantum correlated states against noises. This project is jointly funded by the Physics Division and the Established Program to Stimulate Competitive Research (EPSCoR).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.

了解量子信息如何在许多相互作用的组件中传播如何传播以及如何控制它以改进的量子设备是一个重要的挑战。具有量子粒子集合的系统可以为有效的计算提供强大的资源，并启用与各个组件不同的属性。但是，这种量子机械效应通常在系统的缺陷和环境扰动上脆弱，并且对线束有挑战性。这项研究旨在通过制定新协议来应对与量子平台相关的系统的动力学过程来应对挑战，并发现了对这些环境效应的新型多体现象的新类型，从而利用了原子理和量子信息科学的最新进展。除这些研究目标外，该项目还将实施各种各样的教育和外展活动，以培训和招募毕业生，本科生和高中生，从而提高他们在量子科学方面的识字率，并为他们作为科学和技术领域的下一代劳动力做好准备。 过去几十年来，在构建可控制的量子平台（例如使用冷原子和离子的量子）方面取得了显着进展。这些平台为检查均衡之外的复杂量子系统开辟了激动人心的机会，纠缠和相关​​性的动态在很大程度上吸引了人们的理解。该项目旨在解决有关多体系统中量子信息动态的基本问题，并探索新的动态行为类别。为此，该研究项目将包括两个相关的推力。第一个推力将研究由与冷原子平台相关的不可整合的晶格汉密尔顿人所描述的自旋合奏中量子相关性的增长。研究的这一部分将定量分析各种几何形状和目标实践程序中的统一多体动力学，可以在当前使用冷原子实现的实验中实现。第二个推力将通过调查没有单身测量操作的量子电路来关注受环境影响的系统。该研究的这一部分将采用分析工具和最先进的数值计算的组合来表征所产生的不同动态阶段和纠缠结构。这些研究方向可以进一步提供指导，以有效地将多体系统转向量子相关状态。 该项目由物理部和启发竞争性研究的既定计划共同资助（EPSCOR）。该奖项反映了NSF的法定任务，并且使用基金会的知识分子优点和更广泛的影响评估标准，被认为值得通过评估。