色散耗散介质中量子光-物质相互作用的空间动力学描述方法
Approach for describing spatial dynamics of quantum light-matter interaction in dispersive dissipative media
摘要：
解决纳米结构中电磁场的放大和产生的挑战性问题使得能够在新的实际应用中实现纳米尺度下电磁场的许多特性。第一性原理量子力学考虑这样的问题是充分限制指数大的自由度，并不允许电磁场动力学被描述，如果它涉及大量的相互作用的原子和电磁场的模式。相反，电磁场的经典描述在纳米尺度上是不正确的，因为高水平的量子涨落与高耗散和噪声水平有关。在本文中，我们开发了一个框架，大大减少了自由度，它描述了电磁场与原子相互作用的量子空间动力学。作为例子，我们考虑了金属亚波长槽中原子间的相互作用，证明了自发激发的电磁脉冲以群速度传播。该方法可用于描述任意色散耗散系统中电磁场的非均匀放大和传播。
英文摘要：
Solving the challenging problem of the amplification and generation of an electromagnetic field in nanostructures enables to implement many properties of the electromagnetic field at the nanoscale in novel practical applications. A first-principles quantum mechanical consideration of such a problem is sufficiently restricted by the exponentially large number of degrees of freedom, and does not allow the electromagnetic field dynamics to be described if it involves a high number of interacting atoms and modes of the electromagnetic field. Conversely, the classical description of electromagnetic fields is incorrect at the nanoscale due to the high level of quantum fluctuations connected to high dissipation and noise levels. In this paper, we develop the framework with a significantly reduced number of degrees of freedom, which describes the quantum spatial dynamics of electromagnetic fields interacting with atoms. As an example, we consider the interaction between atoms placed in a metallic subwavelength groove, and demonstrate that a spontaneously excited electromagnetic pulse propagates with the group velocity. The developed approach may be exploited to describe non-uniform amplification and propagation of electromagnetic fields in arbitrary dispersive dissipative systems.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
