Control and Measurement of Coupled Mesoscopic Quantum Systems

该项目将开发新的理论技术来控制和测量耦合介观量子系统，重点是超导量子比特(量子比特)和谐振器。这些技术在量子信息处理中非常重要。第一个目标是设计两个介观谐振器的纠缠量子态，并对其进行联合操作。第二个目标是分析相位量子比特的隧道动力学，其中Zeno效应是由连续测量引起的。这将有助于阐明测量可用于控制介观系统的方法。这些理论研究对近期介观器件的实验具有重要意义。该项目将专注于中午态的短期实验演示和可扩展量子信息处理的长期方法。这个项目有三种更广泛的影响。首先，威廉姆斯大学的本科生和波士顿大学的研究生将大量参与进来。后者拥有新英格兰最多元化的校园，有很大一部分少数族裔。这些学生不仅将接触到研究，还将获得高性能计算方面的经验，这些技能在工业和学术界正变得越来越重要。威廉姆斯大学参与这项研究的学生将可以访问波士顿大学的并行计算集群。其次，该项目将开发和支持威廉姆斯学院和波士顿大学马萨诸塞州分校之间的合作努力，同时与国家标准与技术研究所并行。第三，该项目将有助于加强和维护波士顿大学波士顿分校的高性能计算设施。

This project will develop new theoretical techniques to control and measure coupled mesoscopic quantum systems, focusing on superconducting quantum bits (qubits) and resonators. Such techniques are important in quantum information processing. The first goal is to engineer entangled quantum states of, and joint operations on, two mesoscopic resonators. The second goal is to analyze the tunneling dynamics of a phase qubit, in which the Zeno effect is induced by a continuous measurement. This will help to elucidate the ways in which measurements can be used to control mesoscopic systems. These theoretical studies are relevant to near-future experiments on mesoscopic devices. The project will focus both on short-term experimental demonstrations of NOON states and long-term approaches to scalable quantum information processing. This project has three kinds of broader impact. First, there will be significant involvement of undergraduate students at Williams, and graduate students at UMass Boston. The latter has the most diverse campus in New England, with a large fraction of minorities. These students will not only be exposed to research, but they will also gain experience in high-performance computing, skills that are becoming increasingly important in industry as well as academia. Students at Williams involved in the research will have access to UMass Boston's parallel computing cluster. Second, the project will develop and support a collaborative effort between Williams College and UMass Boston in parallel with the National Institute of Standards and Technology. Third, the project will contribute to enhancing and maintaining the high-peformance computing facilities at UMass Boston.