Rydberg Interactions and Quantum Control of Cold Trapped Holmium Atoms

冷捕获钬原子的里德伯相互作用和量子控制

• 批准号: 1404357
• 负责人: Mark Saffman
• 金额: $ 41.7万
• 依托单位: University of Wisconsin-Madison
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-08-01 至 2017-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1404357&HistoricalAwards=false
• 关键词: Rydberg; Interactions; Quantum; Control; Cold

This research project will study the properties of Holmium atoms. The Holmium atom has one of the most complex internal structures of any element and our knowledge of its properties is incomplete. Detailed measurements will be made of the atomic structure of Holmium. Experimental methods using lasers and electromagnetic fields will be developed to prepare different internal states and to measure interactions between Holmium atoms. These measurements and methods will provide a foundation for future applications of Holmium to information processing. In addition the project will train scientists in modern techniques of atomic physics and prepare them for careers in academia and industry. The results of this research will be disseminated to the local public in the Madison, Wisconsin area through open houses in the Physics department, through visits to local schools, and by providing internships for local high school students. The rare earth element Holmium (Ho) has a 128 dimensional ground state manifold, the largest of any stable atomic isotope. Experiments will use a Magneto-Optical Trap of Ho atoms, recently demonstrated in the Saffman laboratories. Optical control techniques using rf and microwave fields will be developed to prepare specific Zeeman substates in the 128 dimensional ground manifold. Rydberg states will be probed using two-photon excitation and the hitherto unknown quantum defects of the Ho Rydberg states will be measured. The quantum defects will be used to develop models for effective Rydberg wavefunctions which will then be used to calculate Rydberg-Rydberg interaction strengths. The Rydberg state measurements will form the basis for Rydberg blockade experiments with Ho atoms, and the demonstration of entanglement. These studies of the ground and Rydberg state properties of Ho atoms, as well as the development of control techniques, will establish a knowledge basis for collective encoding of quantum registers in small Ho ensembles.

该研究项目将研究钬原子的性质。钬原子是所有元素中最复杂的内部结构之一，我们对其性质的了解并不完整。将对钬的原子结构进行详细测量。将开发使用激光和电磁场的实验方法来制备不同的内部状态并测量钬原子之间的相互作用。这些测量和方法将为钬未来在信息处理中的应用奠定基础。 此外，该项目还将培训科学家掌握现代原子物理技术，并为他们在学术界和工业界的职业生涯做好准备。这项研究的结果将通过物理系开放日、参观当地学校以及为当地高中生提供实习机会向威斯康星州麦迪逊地区的当地公众传播。稀土元素钬 (Ho) 具有 128 维基态流形，是所有稳定原子同位素中最大的。实验将使用最近在萨夫曼实验室展示的钬原子磁光陷阱。将开发使用射频和微波场的光学控制技术，以在 128 维接地流形中制备特定的塞曼子态。将使用双光子激发来探测里德伯态，并测量 Ho 里德伯态迄今为止未知的量子缺陷。量子缺陷将用于开发有效里德堡波函数的模型，然后用于计算里德堡-里德堡相互作用强度。里德伯态测量将构成 Ho 原子里德伯封锁实验和纠缠演示的基础。这些对 Ho 原子的基态和里德伯态性质的研究，以及控制技术的发展，将为小型 Ho 系综中量子寄存器的集体编码建立知识基础。