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”，支持弗吉尼亚大学物理系的量子场和量子信息（QFQI）小组。量子计算（QC）是一项迷人的努力，其最重要的前景是特定数学问题的指数级加速，如量子系统模拟和整数分解，后者是破解网络加密的关键。对QC的实验实施提出的物理挑战是令人生畏的，可以通过在个体水平上精确控制数千个单量子系统（例如原子）的要求来总结。与原子相比，光更容易有效地控制，所以这个研究项目是基于PI和他的合作者提出的一个关于量子计算机的新建议，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，这一提议提供了令人兴奋的前景，特别是量子计算机原型尺寸的惊人增加。拟议工作的更广泛影响包括对UVa物理研究生和本科课程的积极研究贡献，以每年3名博士生和每年夏天2名本科生的持续建议的形式（通常由NSF REU补充资助）。同样由于这项研究，每年由不同的QFQI成员举办几次部门研讨会，并且现在由弗吉尼亚大学PI定期教授高级研究生课程“量子光学和量子信息”（物理888）。在跨学科方面，这项研究是由QFQI小组和UVa工程学院微加工实验室主任Arthur Lichtenberger教授共同努力的，特别是在微光刻技术应用于光子材料的制造方面。最后但并非最不重要的是，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，这项研究有可能迎来量子力学的基本测试。因此，这代表了一项比原子、分子和光学物理学领域更广泛的科学努力。