权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Symmetric Many-Body Correlations in Atomic Ensembles

原子系综中的对称多体相关性

基本信息

批准号：
1606989
负责人：
Ivan Deutsch
金额：
$ 27万
依托单位：
University of New Mexico
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
2016
资助国家：
美国
起止时间：
2016-09-01 至 2020-08-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1606989&HistoricalAwards=false
关键词：
Symmetric Many Body Correlations Atomic

项目摘要

Many-body correlations lie at the heart of complex systems at the microscopic level where the strange rules of quantum physics hold sway. Such systems occur naturally at all scales, ranging from fundamental particles, to atoms, molecules, and solid-state materials. In addition, such quantum complexity is now understood to be a resource for processing information in ways that are not possible in a world operating under the logic of classical physics. These dual aspects of many-body correlations - defining the richness in the natural world and opening the door to powerful new applications - are currently driving many explorations in atomic, molecular, and optical physics. This project will push the boundaries of this frontier. The research will enable new capabilities in manipulating and understanding quantum many-body systems and their complex dynamics, with potential applications in quantum information processing and precision measurement. The project will contribute to the knowledge base of quantum information science, and to the training of future scientists in this highly interdisciplinary field. Students will be involved in all aspects of the project, including education, research, and the dissemination of results. The project is an integral part of the NSF-funded Center for Quantum Information and Control. Activities include weekly group meetings, research seminars, and an annual research retreat that strengthens the connections between junior and senior members. Two key aspects of the problem of many-body complexity; namely, creating and detecting symmetric correlations, will be explored. The specific goals are to develop protocols for implementing general quantum control to optimally and robustly generate quantum correlations. Project personnel will study how a measurement, in conjunction with control, can be used to extract information about the initial correlations present in a many-body system. This builds on the group's expertise in continuous measurement tomography, used previously to reconstruct one-body correlations. They will extended these ideas to study the reconstruction of two-body correlations, and beyond. Project personnel will also explore the intricate relation between information gain, complexity of dynamics, and quantum backaction in the continuous measurement of many-body systems.

多体相关性是微观层次复杂系统的核心，量子物理学的奇怪规则占据着主导地位。这样的系统自然地发生在所有尺度上，从基本粒子到原子、分子和固态材料。此外，这种量子复杂性现在被理解为一种处理信息的资源，在经典物理学逻辑下运行的世界中，这种处理信息的方式是不可能的。多体关联的这两个方面--定义了自然界的丰富性，并为强大的新应用打开了大门--目前正在推动原子、分子和光学物理学的许多探索。该项目将推动这一前沿的边界。该研究将使操纵和理解量子多体系统及其复杂动力学的新能力成为可能，并在量子信息处理和精密测量方面具有潜在的应用。该项目将有助于量子信息科学的知识基础，并在这个高度跨学科的领域培养未来的科学家。学生将参与该项目的各个方面，包括教育，研究和成果的传播。该项目是NSF资助的量子信息和控制中心的一个组成部分。活动包括每周小组会议，研究研讨会和年度研究务虚会，加强初级和高级成员之间的联系。多体复杂性问题的两个关键方面，即创建和检测对称相关性，将进行探讨。具体目标是开发用于实现一般量子控制的协议，以最佳和鲁棒地生成量子关联。项目人员将研究如何将测量与控制相结合，以提取有关多体系统中存在的初始相关性的信息。这建立在该小组在连续测量断层扫描方面的专业知识基础上，以前用于重建单体相关性。他们将把这些想法扩展到研究两体相关性的重建以及其他方面。项目人员还将探索在多体系统的连续测量中信息增益、动力学复杂性和量子反作用之间的复杂关系。