标题： 通过强系统-环境耦合分离弛豫时间尺度：耗散三能级系统作为案例研究 显示英文标题

标题： Separation of relaxation timescales via strong system-bath coupling: Dissipative three-level system as a case study

摘要： 我们通过分析证明，强系统-环境耦合将耗散量子系统的弛豫动力学分为两个不同的区域：一种是短时间动力学，如预期的那样，随着与环境耦合的增强而加速；另一种是慢动力学，反直觉地，在足够强的耦合下会变得越来越漫长。 利用反应坐标极化变换映射，我们揭示了这一效应的一般机制，并推导出两种弛豫时间尺度的精确表达式。 数值模拟验证了我们的分析预测。 从实际角度来看，我们的结果表明，对耗散浴的强耦合可以自主生成并维持长寿命的量子相干性，为浴工程化的量子态制备提供了一种有前景的策略。 显示英文摘要

摘要： We analytically demonstrate that strong system-bath coupling separates the relaxation dynamics of a dissipative quantum system into two distinct regimes: a short-time dynamics that, as expected, accelerates with increasing coupling to the environment, and a slow dynamics that, counterintuitively, becomes increasingly prolonged at sufficiently strong coupling. Using the reaction-coordinate polaron-transform mapping, we uncover the general mechanism behind this effect and derive accurate expressions for both relaxation timescales. Numerical simulations confirm our analytical predictions. From a practical perspective, our results suggest that strong coupling to a dissipative bath can autonomously generate and sustain long-lived quantum coherences, offering a promising strategy for bath-engineered quantum state preparation.