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变以及量子信息系统的应用目标和方法：纠缠是加密系统巨大改进的核心，有望为一般的量子信息系统，特别是量子计算提供支柱。自从约瑟夫森系统阵列以来，耶鲁大学和圣巴巴拉小组表现出了巨大的希望，这项工作的理论分析将是使用精确的方法进行，与其他人目前使用的主方程不同。特别是，将强调温度对大型系统的影响，因为即使对于小型系统，也发现适度的温度会导致解缠结和该效应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，关于其基础的许多问题仍然存在。特别是，量子力学的核心是纠缠，但正如费曼等人所强调的那样，其本质本质上仍然未知。因此，我们将付出巨大的努力来更深入地理解它。更广泛的好处：具有讽刺意味的是，纠缠是一种工具尽管人们对它知之甚少，但它基本上被用于所有现代量子系统。因此，对其基本特征的更多了解应该会对未来信息系统的设计产生重大影响，并产生明显的经济和社会影响。它的研究将对研究生产生非常有趣的吸引力和挑战，并且应该对课程讨论产生很大的刺激。我们还将尝试激发学生的兴趣，不仅是路易斯安那州立大学，还有南方大学（HBCU）。