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和联合操作。第二个目标是分析相位量子比特的隧穿动力学，其中Zeno效应由连续测量引起。这将有助于阐明测量可用于控制介观系统的方法。 这些理论研究与不久的将来介观器件的实验有关。 该项目将专注于NOON状态的短期实验演示和可扩展量子信息处理的长期方法。该项目具有三种更广泛的影响。首先，威廉姆斯大学的本科生和马萨诸塞大学波士顿分校的研究生将大量参与。后者拥有新英格兰最多样化的校园，少数民族占很大比例。这些学生不仅将接触到研究，但他们也将获得高性能计算的经验，在工业界和学术界越来越重要的技能。参与这项研究的威廉姆斯的学生将可以使用马萨诸塞大学波士顿分校的并行计算集群。其次，该项目将发展和支持威廉姆斯学院和马萨诸塞大学波士顿分校与国家标准与技术研究所之间的合作努力。第三，该项目将有助于增强和维护马萨诸塞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.