QMHP: Entanglement and Coherence Decay in Nanosystems and Applications to Quantum Information Systems

QMHP：纳米系统中的纠缠和相干衰变及其在量子信息系统中的应用

• 批准号: 1125675
• 负责人: Robert O'Connell
• 金额: $ 34.68万
• 依托单位: Louisiana State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-08-15 至 2016-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1125675&HistoricalAwards=false
• 关键词: QMHP; Entanglement; Coherence; Decay; Nanosystems

ENTANGLEMENT AND COHERENCE DECAY IN NANOSYSTEMS AND APPLICATIONS TOQUANTUM INFORMATION SYSTEMSObjectives and Approaches: Entanglement is at the heart of the vastimprovement in encryption systems and will hopefully provide the backboneof quantum information systems in general, particularly quantumcomputing.Since the Josephson System arrays, being pursued experimentallyby the Yale and Santa Barbara groups, show great promise, a theoreticalanalysis of this work will be carried out, using exact methods, as distinct from the master equations presently being used by others.In particular,the effect of temperature on large systems will be emphasized since,even for small systems, it has been found that moderate temperatures can cause disentanglement and that the effect is constant for all times.Intellectual Merit : Understanding the physical world relies heavily on Quantum Mechanics. But, many questions remain concerning its foundations. In particular, the heart of quantum mechanics is entanglement but, as emphasized by Feynman, among others, its nature essentially remains unknown .Thus, a strong effort will be made to understand it more deeply.Broader Benefits: Ironically, entanglement is a tool which is essentially used in all modern quantum systems, despite being poorly understood. Thus, greater knowledge of its fundamental characterestics should have significant impact on the design of future information systems with clear economic and social impact. Its study will present a very interesting attraction and challenge to graduate students and should be a great stimulus in course discussions. Attempts will also be made to interest students , not only at LSU, but also at Southern University (an HBCU).

纳米系统中的纠缠和相干衰减及其在量子信息处理中的应用纠缠是加密系统不断改进的核心，有望成为量子信息系统，特别是量子计算的基础。由于耶鲁大学和圣巴巴拉大学的实验小组正在研究约瑟夫森系统阵列，显示出巨大的希望，因此将对这项工作进行理论分析，使用精确的方法，与目前其他人使用的主方程不同。特别是，温度对大系统的影响将被强调，因为即使对于小系统，已经发现适度的温度也会导致解纠缠，并且这种影响在任何时候都是恒定的。智力优点：理解物理世界在很大程度上依赖于量子力学。但是，关于它的基础仍然存在许多问题。特别是，量子力学的核心是纠缠，但正如Feynman等人所强调的那样，它的本质本质仍然是未知的。因此，我们将努力更深入地理解它。更广泛的好处：具有讽刺意味的是，纠缠是一种基本上用于所有现代量子系统的工具，尽管人们对它的理解很少。因此，更多地了解其基本特征，应具有重大影响的未来信息系统的设计具有明显的经济和社会影响。它的研究将对研究生提出一个非常有趣的吸引力和挑战，应该是课程讨论的一个很大的刺激。还将努力使学生感兴趣，不仅在路易斯安那州立大学，而且在南方大学（HBCU）。