主方程
物理
联轴节(管道)
量化(信号处理)
量子
统计物理学
林德布拉德方程
量子光学
量子力学
计算机科学
算法
机械工程
工程类
作者
Maksim Lednev,F. J. Garcı́a-Vidal,Johannes Feist
标识
DOI:10.1103/physrevlett.132.106902
摘要
Despite significant theoretical efforts devoted to studying the interaction between quantized light modes and matter, the so-called ultrastrong coupling regime still presents significant challenges for theoretical treatments and prevents the use of many common approximations. Here we demonstrate an approach that can describe the dynamics of hybrid quantum systems in any regime of interaction for an arbitrary electromagnetic (EM) environment. We extend a previous method developed for few-mode quantization of arbitrary systems to the case of ultrastrong light-matter coupling, and show that even such systems can be treated using a Lindblad master equation where decay operators act only on the photonic modes by ensuring that the effective spectral density of the EM environment is sufficiently suppressed at negative frequencies. We demonstrate the validity of our framework and show that it outperforms current state-of-the-art master equations for a simple model system, and then study a realistic nanoplasmonic setup where existing approaches cannot be applied.
科研通智能强力驱动
Strongly Powered by AbleSci AI