Quantum Gates with Single Atom and Ensemble Qubits Mediated by Rydberg iInteractions

由 Rydberg iInteractions 介导的具有单原子和集合量子位的量子门

• 批准号: 1005550
• 负责人: Mark Saffman
• 金额: $ 13.96万
• 依托单位: University of Wisconsin-Madison
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-09-01 至 2011-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1005550&HistoricalAwards=false
• 关键词: Quantum; Gates; Single; Atom; Ensemble

The application of controlled quantum dynamics to computational problems has been one of the most important developments in information science in the last two decades. This project uses optically trapped neutral atom qubits for implementing quantum logic operations. The experimental approach uses laser cooled neutral Rb atoms stored in a linear array of optically resolvable trapping sites. Focused optical beams are used to manipulate the quantum states of the atoms. Two-atom interactions are turned on and off by exciting the atoms to high lying Rydberg states that interact strongly via a dipole-dipole coupling. In this way single and two-qubit gates are implemented, and used to create entangled states. The broader impacts of this work are twofold. First, this research contributes towards realizing the dream of a large scale quantum processor that exceeds the capabilities of conventional classical computers. The availability of such a device would have far reaching impact on numerical mathematics, information security, and problems in the simulation of quantum systems related to the development of new, technologically valuable materials. Second, the research program will contribute to the training of students and postdoctoral researchers for careers in science and engineering. People from diverse backgrounds will be educated and trained in modern experimental science, as well as in abstract concepts that bridge the boundary between physics and information science. Training will occur via curriculum enrichments, and through direct participation in the University based research program. We will also inform the local community about the importance of physics to information technology, and the new developments in the area of quantum information science. Outreach to the public will be facilitated by public visiting days at the Physics department, laboratory tours, and faculty visits to local schools.

在过去的二十年中，将受控量子动力学应用于计算问题一直是信息科学中最重要的发展之一。 This project uses optically trapped neutral atom qubits for implementing quantum logic operations. The experimental approach uses laser cooled neutral Rb atoms stored in a linear array of optically resolvable trapping sites. Focused optical beams are used to manipulate the quantum states of the atoms.通过激发原子到高谎言的rydberg状态，通过偶极偶极偶联强烈相互作用，打开和关闭了两种原子的相互作用。 In this way single and two-qubit gates are implemented, and used to create entangled states. The broader impacts of this work are twofold.首先，这项研究有助于实现超过传统古典计算机功能的大规模量子处理器的梦想。这种设备的可用性将对与新技术有价值材料的开发相关的量子系统模拟中的数值数学，信息安全和问题产生巨大影响。 Second, the research program will contribute to the training of students and postdoctoral researchers for careers in science and engineering. 来自不同背景的人将接受现代实验科学的教育和培训，以及弥合物理学和信息科学之间边界的抽象概念。 Training will occur via curriculum enrichments, and through direct participation in the University based research program.我们还将告知当地社区物理学对信息技术的重要性以及量子信息科学领域的新发展。 在物理部，实验室旅行和对当地学校的教职员工访问的公开访问日，将促进向公众推广。