One-Way Quantum Computing in the Optical Frequency Comb

光频梳中的单向量子计算

• 批准号: 0855632
• 负责人: Olivier Pfister
• 金额: $ 52万
• 依托单位: University of Virginia Main Campus
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-08-01 至 2013-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0855632&HistoricalAwards=false
• 关键词: Way; Quantum; Computing; Optical; Frequency

This award, "One-way quantum computing in the optical frequency comb," supports the Quantum Fields and Quantum Information (QFQI) group in the Physics Department of the University of Virginia (UVa). Quantum computing (QC) is a fascinating endeavor whose most important promise is the exponential speedup of particular mathematical problems such as quantum system simulation and integer factoring, the latter being key to breaking cyber encryption. The physical challenges posed to the experimental implementation of QC are daunting and can be summarized by the requirement of exquisitely controlling thousands of single quantum systems (e.g. atoms) at the individual level. Because light is easy to control efficiently, as opposed to atoms, this research project is based on a novel proposal for a quantum computer, by the PI and his collaborators, using laser-like beams of light at different frequencies. A large amount of prior theoretical results has shown that this proposal offers exciting perspectives, in particular a spectacular increase of the size of prototype quantum computers.Broader impacts of the proposed work comprise an active research contribution to the UVa Physics graduate and undergraduate programs, in the form of the continuous advising of 3 Ph.D. students per year and 2 undergraduate students per summer (typically supported by NSF REU supplements to the grant). Also stemming from this research, departmental seminars have been given several times a year by different QFQI members and an advanced graduate course "Quantum Optics and Quantum Information" (Phys 888) is now taught by the PI at UVa on a regular basis. On the interdisciplinary front, this research is spawning collaborative efforts between the QFQI group and Prof. Arthur Lichtenberger, director of the UVa Microfabrication Laboratory at the UVa School of Engineering, in particular for microphotolithography applied to the fabrication of photonic materials. Last but not least, there exists the potential for this research to usher in fundamental tests of quantum mechanics by exploring large-scale quantum behavior in a regime where theoretical predictions are untested and even difficult to make. This would therefore represent a scientific endeavor on a broader scale than the field of Atomic, Molecular, and Optical Physics.

该奖项名为“光学频率梳中的单向量子计算”，支持弗吉尼亚大学 (UVa) 物理系的量子场和量子信息 (QFQI) 小组。量子计算（QC）是一项令人着迷的事业，其最重要的前景是特定数学问题的指数级加速，例如量子系统模拟和整数分解，后者是破解网络加密的关键。 QC实验实施所面临的物理挑战是令人畏惧的，可以概括为在个体水平上精确控制数千个单量子系统（例如原子）的要求。由于与原子相比，光更容易有效控制，因此该研究项目基于 PI 及其合作者提出的量子计算机的新颖提议，使用不同频率的类似激光的光束。大量先前的理论结果表明，该提案提供了令人兴奋的前景，特别是原型量子计算机尺寸的惊人增加。拟议工作的更广泛影响包括对 UVa 物理研究生和本科生项目的积极研究贡献，连续指导3名博士的形式每年 1 名学生，每年暑期 2 名本科生（通常由 NSF REU 补助金补充支持）。同样源于这项研究，不同的 QFQI 成员每年都会举办多次院系研讨会，并且现在由 PI 定期在弗吉尼亚大学教授高级研究生课程“量子光学和量子信息”（Phys 888）。在跨学科方面，这项研究正在 QFQI 小组和 UVa 工程学院微加工实验室主任 Arthur Lichtenberger 教授之间展开合作，特别是在应用于光子材料制造的微光刻技术方面。最后但并非最不重要的一点是，这项研究有可能通过在理论预测未经检验甚至难以做出的情况下探索大规模量子行为来引入量子力学的基本测试。因此，这将代表比原子、分子和光学物理领域更广泛的科学努力。