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.

受控量子动力学在计算问题中的应用是过去二十年信息科学最重要的发展之一。该项目使用光捕获中性原子量子位来实现量子逻辑运算。该实验方法使用激光冷却的中性铷原子，存储在光学可分辨捕获位点的线性阵列中。聚焦光束用于操纵原子的量子态。通过将原子激发到通过偶极-偶极耦合强烈相互作用的高位里德伯态来打开和关闭两个原子的相互作用。通过这种方式，实现了单量子位门和双量子位门，并用于创建纠缠态。 这项工作的更广泛影响是双重的。首先，这项研究有助于实现超越传统经典计算机能力的大规模量子处理器的梦想。这种设备的可用性将对数值数学、信息安全以及与新的、具有技术价值的材料的开发相关的量子系统模拟问题产生深远的影响。其次，该研究计划将有助于培养学生和博士后研究人员在科学和工程领域的职业生涯。 来自不同背景的人们将接受现代实验科学以及弥合物理学和信息科学之间界限的抽象概念的教育和培训。培训将通过丰富课程以及直接参与大学研究项目来进行。我们还将向当地社区介绍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。 物理系的公众参观日、实验室参观以及教师对当地学校的参观将有助于向公众进行宣传。