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CAREER: Interfacing trapped ions with telecom light

职业：将捕获离子与电信光连接起来

基本信息

批准号：
1752685
负责人：
Steven Olmschenk
金额：
$ 40万
依托单位：
Denison University
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
2018
资助国家：
美国
起止时间：
2018-05-15 至 2025-04-30
项目状态：
未结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1752685&HistoricalAwards=false
关键词：
CAREER Interfacing trapped ions telecom

项目摘要

Atomic physics experiments are making extraordinary advances in manipulating the quantum states of atoms, ions, and photons. Quantum control of these systems paves the way for new technologies such as quantum communication and quantum computing. This project will pioneer the use of lanthanum ions as a quantum bit in order to overcome some challenges for quantum communication networks. In particular, the project seeks to demonstrate an interface between ions and infrared photons. Since infrared light suffers minimal losses in an optical fiber, this approach can extend the size and efficiency of quantum communication networks. Students working on this project will benefit from atomic physics research training using lasers, optics, photonics, and fiber technology. The project will also develop new curricula incorporating quantum information science and photonics technologies. These activities will help prepare the next generation of STEM researchers, educators, and innovators.The research aim of this project is to establish doubly-ionized lanthanum as a quantum bit, or qubit, that can be controlled with telecom-compatible infrared light. Trapped atomic ions are one of the leading platforms for quantum information processing applications due to their long trapping times, good coherence properties, and the availability of methods to precisely control their quantum states using radiation. However, the established ion trapping experiments use ions from elements that mainly interact with visible and ultraviolet light. This poses a challenge for quantum networking because these wavelengths get attenuated in optical fibers. Doubly-ionized lanthanum is unique because telecom-compatible infrared light is all that should be needed for laser cooling and qubit operations. This project will use telecom-compatible infrared light first for Doppler cooling, and then for manipulation of qubits based on magnetic-field-insensitive hyperfine states. This is expected to be advantageous for long-distance quantum communication protocols that use atom-photon entanglement and for distributed quantum computation schemes. Directly interfacing ions with infrared wavelengths will also reduce the complexity of the system, and may thus enhance the potential for scaling up larger quantum networks.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

原子物理实验在操纵原子、离子和光子的量子态方面取得了非凡的进展。这些系统的量子控制为量子通信和量子计算等新技术铺平了道路。该项目将率先使用镧离子作为量子比特，以克服量子通信网络的一些挑战。特别是，该项目试图展示离子和红外光子之间的界面。由于红外光在光纤中的损耗最小，这种方法可以扩大量子通信网络的规模和效率。从事这个项目的学生将从使用激光、光学、光子学和光纤技术的原子物理研究培训中受益。该项目还将开发结合量子信息科学和光子学技术的新课程。这些活动将有助于为下一代STEM研究人员、教育工作者和创新者做准备。该项目的研究目标是建立双离化镧作为量子比特，即量子比特，可以用电信兼容的红外光控制。囚禁原子离子具有较长的囚禁时间、良好的相干性质以及可以利用辐射精确控制其量子态的方法，是量子信息处理应用的主要平台之一。然而，已建立的离子捕获实验使用的离子来自主要与可见光和紫外光相互作用的元素。这给量子网络带来了挑战，因为这些波长在光纤中会衰减。双电离镧是独一无二的，因为与电信兼容的红外光是激光冷却和量子比特操作所需的全部。该项目将首先使用与电信兼容的红外光进行多普勒冷却，然后用于基于磁场不敏感的超精细状态的量子比特操作。这有望对使用原子-光子纠缠的长距离量子通信协议和分布式量子计算方案有利。离子与红外波长的直接接口也将降低系统的复杂性，从而可能增强扩大更大量子网络的潜力。这一奖项反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。