Long and Medium-Term Research: Development of SupercomputerCodes for Solving Quantum Optic Master Equations

中长期研究：开发求解量子光学主方程的超级计算机代码

• 批准号: 9102234
• 负责人: Howard Carmichael
• 金额: $ 4.32万
• 依托单位: University of Oregon Eugene
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-09-01 至 1993-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9102234&HistoricalAwards=false
• 关键词: Long; Medium; Term; Research; Development

Alsing Long & Medium-Term Research: Development of Supercomputer Codes for Solving Quantum Optic Master Equations This award is made under the Program for Long- & Medium-Term Research at Foreign Centers of Excellence, which enables U.S. scientists and engineers to conduct three to twelve months abroad at research centers of proven excellence. The program's awards provide opportunities for joint research, and the use of unique or complementary facilities, expertise and experimental conditions abroad. This award, sponsored by Dr. Howard J. Carmichael of the University of Oregon at Eugene, will support a twelve-month postdoctoral research visit by Dr. Paul M. Alsing with Dr. Craig M. Savage at the Australia National University, Canberra. They will develop supercomputer codes for solving quantum optic master equations. The system under study is a single atom strongly coupled to a quantized mode of a high quality optic cavity driven by an external coherent electromagnetic field. Via a quantum mechanical master equation, the problem of calculating quantum statistical quantities of interest (steady state field distributions, spectra, etc.) is reduced to solving a large sparse system of coupled linear differential equations. Basic supercomputer codes developed by the researchers already exist and use a simple one-step Euler algorithm. They propose to investigate other, faster integrations schemes to yield a healthy trade off between speed of execution and memory requirements. They will modularize these to extend their applicability, creating a very general, fast, and efficient quantum optic master equation solver. The basic codes have already discovered a novel phase bimodality for the intercavity field of a single atom in a cavity driven on resonance. To this, the researchers will add detunings and possibly several modes and/or a few atoms. They will study quantum mechanical systems whose classical equations exhibit chaos. The proposed master equation solver should prove a very general, flexible, numerical tool to compliment analytic investigations into a wide range of phenomena in quantum optics. The award recommendation provides funds to cover international travel, dependent's allowance, and a flat administrative allowance of $250 for the U.S. home institution.

Alsing长期和中期研究：开发用于求解量子光学主方程的超级计算机代码该奖项是根据国外卓越中心长期和中期研究计划颁发的，该计划使美国科学家和工程师能够在国外经过验证的卓越研究中心进行三到十二个月的研究。 该项目的奖项提供了联合研究以及使用国外独特或互补的设施、专业知识和实验条件的机会。 该奖项由俄勒冈大学尤金分校的 Howard J. Carmichael 博士赞助，将支持 Paul M. Alsing 博士和 Craig M. Savage 博士在堪培拉澳大利亚国立大学进行为期 12 个月的博士后研究访问。 他们将开发用于求解量子光学主方程的超级计算机代码。 所研究的系统是一个与外部相干电磁场驱动的高质量光学腔的量化模式强耦合的单原子。 通过量子力学主方程，计算感兴趣的量子统计量（稳态场分布、光谱等）的问题被简化为求解耦合线性微分方程的大型稀疏系统。 研究人员开发的基本超级计算机代码已经存在，并使用简单的一步欧拉算法。 他们建议研究其他更快的集成方案，以在执行速度和内存需求之间实现健康的权衡。 他们将对这些进行模块化以扩展其适用性，创建一个非常通用、快速且高效的量子光学主方程求解器。 基本代码已经发现了谐振驱动腔中单个原子的腔间场的新型相位双峰性。 为此，研究人员将添加失谐以及可能的几种模式和/或一些原子。 他们将研究其经典方程表现出混沌的量子力学系统。 所提出的主方程求解器应该被证明是一种非常通用、灵活的数值工具，可以补充对量子光学中各种现象的分析研究。 该奖项建议提供资金用于支付国际旅行、家属津贴以及美国本土机构 250 美元的统一行政津贴。