Quantum theory of decoherence and thermalization in structured environments

结构化环境中退相干和热化的量子理论

• 批准号: 515993674
• 负责人: Professor Dr. Klaus Hornberger
• 金额: --
• 依托单位: Arbeitsgruppe Theoretische Quantenphysik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/515993674?language=en
• 关键词: Quantum; theory; decoherence; thermalization; structured

The aim of this project is to develop a realistic and comprehensive theory describing how the ro-translational quantum motion of nanoparticles is affected by inhomogeneous and anisotropic environments and by emission, absorption, and diffusive scattering processes occurring on the particle surfaces. We derive the corresponding quantum master equations by combining the theory of generalized and continuous measurements with concepts from scattering theory. This allows incorporating the interaction processes in a microscopically adequate fashion, while ensuring complete positivity and conformity with symmetry. Based on these Markovian quantum master equations, we study the impact of structured environments on future experiments with levitated and free-flying nanoparticles serving as quantum sensors or probing macroscopic quantum superpositions.

该项目的目的是发展一个现实和全面的理论，描述纳米粒子的反平移量子运动如何受到非均匀和各向异性环境以及粒子表面发生的发射、吸收和扩散散射过程的影响。将广义连续测量理论与散射理论的概念相结合，导出了相应的量子主方程。这允许以微观适当的方式纳入相互作用过程，同时确保完全的积极性和对称性。基于这些马尔可夫量子主方程，我们研究了结构化环境对未来悬浮和自由飞行纳米粒子作为量子传感器或探测宏观量子叠加的实验的影响。