Non-Markovian continuous-time quantum random walks of multiple interacting particles

多个相互作用粒子的非马尔可夫连续时间量子随机游走

• 批准号: 278224170
• 负责人: Professor Dr. Kurt Busch
• 金额: --
• 依托单位: Max-Born-Institut für Nichtlineare Optik und Kurzzeitspektroskopie (MBI)
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 财政年份: 2015
• 资助国家: 德国
• 起止时间: 2014-12-31 至 2022-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/278224170?language=en
• 关键词: Non; Markovian; continuous; time; quantum

In quantum physics, environmental noise represents the most prominent adversary that precludes the generation, control, and preservation of fundamental properties such as coherence, entanglement, and quantum correlations. More precisely, in such open quantum systems the phase properties of the associated quantum mechanical waves are randomly distorted by the environment, as a result their interference capability or ‘coherence’ tends to vanish. Indeed, the fragility of quantum coherence is one of the main impediments for the development of quantum-enhanced technologies. Clearly, identifying mechanisms to prevent or slow down decoherence effects in quantum systems is an issue of scientific and practical importance. Even though there exist some investigations examining the influence of decoherence and disorder on the dynamics of two-particle systems, the joint effects of decoherence, particle indistinguishability, and inter-particle interactions are poorly understood. The aim of this proposal is to investigate the behavior of multiple interacting particles traversing dynamically disordered quantum systems. In doing so, we have we will identify ways to impose tailored dynamic disorder into waveguide networks. The present proposal essentially interfaces theoretical and experimental investigations of the open quantum systems. Our studies will advance our understanding of the primary physical events occurring in quantum complex systems. In addition, our work will help to identify potential applications of decoherence to control photon encoded information and many-body quantum correlations. Importantly, our theoretical findings will always be tested experimentally within the context of integrated quantum photonics.

在量子物理学中，环境噪声是最突出的对手，它阻碍了相干、纠缠和量子关联等基本性质的产生、控制和保持。更准确地说，在这样的开放量子系统中，相关量子力学波的相位特性会随机地受到环境的扭曲，结果是它们的干扰能力或‘相干性’往往会消失。事实上，量子相干的脆弱性是量子增强技术发展的主要障碍之一。显然，确定防止或减缓量子系统中退相干效应的机制是一个具有科学和实际意义的问题。尽管已经有一些研究考察了退相干和无序对两粒子系统动力学的影响，但对退相干、粒子不可分辨和粒子间相互作用的联合效应却知之甚少。这个提议的目的是研究多个相互作用的粒子在动态无序量子系统中的行为。在这样做的过程中，我们将找到将量身定做的动态无序施加到波导网络中的方法。本提议实质上是开放量子系统的理论和实验研究的结合。我们的研究将促进我们对量子复杂系统中发生的初级物理事件的理解。此外，我们的工作将有助于确定退相干在控制光子编码信息和多体量子关联方面的潜在应用。重要的是，我们的理论发现将始终在集成量子光子学的背景下进行实验测试。