Longhi Stefano
Opt Lett. 2025 Mar 15;50(6):2069-2072. doi: 10.1364/OL.550728.
This work explores the emergence of Mpemba-like effects within the quantum theory of lasers. By examining the temporal dynamics of photon number statistics in a single-mode laser above threshold, we reveal the curious and counterintuitive possibility that a laser system, starting with photon statistics far from equilibrium, may reach its stationary nearly Poissonian distribution faster than a system initially closer to equilibrium. Drawing parallels to both classical and quantum Mpemba effects, we suggest that this behavior results from the unique relaxation dynamics of photon states, which is described by a non-integrable birth-death process. Our findings offer new insights into the foundational aspects of quantum laser light and contribute to the expanding body of research on non-equilibrium phenomena in quantum systems.
这项工作探索了激光量子理论中类似姆潘巴效应的出现。通过研究阈值以上单模激光器中光子数统计的时间动态，我们揭示了一种奇特且违反直觉的可能性，即一个起始时光子统计远离平衡态的激光系统，可能比一个初始时更接近平衡态的系统更快地达到其稳定的近泊松分布。通过与经典和量子姆潘巴效应进行类比，我们认为这种行为源于光子态独特的弛豫动力学，它由一个不可积的生死过程描述。我们的发现为量子激光光的基础方面提供了新的见解，并为量子系统中非平衡现象的不断扩展的研究做出了贡献。
