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

纳米系统中的纠缠和相干衰减及其在量子信息系统中的应用目标和方法：纠缠是加密系统中血管保护的核心，有望为量子信息系统，特别是量子计算提供基础。由于耶鲁大学和圣巴巴拉小组正在进行实验的约瑟夫森系统阵列显示出巨大的前景，将使用与其他人目前使用的主方程不同的精确方法对这项工作进行理论分析。尤其是，由于即使对于小系统，温度对大系统的影响也将被强调，人们已经发现，适中的温度可以导致解缠，并且这种影响是一直持续的。智力上的优点：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，但正如费曼等人强调的那样，它的本质仍然未知。因此，人们将付出巨大努力来更深入地理解它。布罗德的好处：具有讽刺意味的是，纠缠是所有现代量子系统中基本使用的工具，尽管人们对它知之甚少。因此，对其基本特征的更多了解应对未来具有明显经济和社会影响的信息系统的设计产生重大影响。它的研究将给研究生带来非常有趣的吸引力和挑战，并在课程讨论中起到巨大的刺激作用。还将努力引起学生的兴趣，不仅是路易斯安那州立大学，也包括南方大学(HBCU)。

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).