Classicality and Quantumness in Glassy Open Quantum Dynamics

对于经典和量子物理系统，与外部环境的相互作用通常对其配置中编码的任何信息都是有害的，系统长期处于稳定阶段，与其初始条件无关。这对量子技术的应用构成了一个关键问题，在实验平台上，量子信息不可避免地会被超时擦除。然而，在具有玻璃态动力学特征的经典软物质中，向稳定相的松弛可以显著延迟，这使得最初编码的信息的一部分几乎不受影响地存活很长时间。这个项目将探索经典运动学约束模型的开放量子泛化，这些模型以这种玻璃动力学为特征，目标是发现新的物理系统，这些系统不仅可以存储经典的量子信息，还可以存储更脆弱的量子信息。第一阶段将包括对小系统的分析研究。然后，这些结果将指导采用成熟的精确和系统可改进的数值技术，以有效地模拟更大的系统。实验上可行的设置可能成为未来几年的重点，其结果可能为用于量子计算应用的新型量子存储器铺平道路。

For classical and quantum physical systems, interactions with external environments are usually detrimental to any information encoded within their configurations, with systems found at long times in stable phases independent from their initial conditions. This forms a critical issue for quantum technology applications, with quantum information unavoidably erased overtime in experimental platforms. In classical soft matter featuring glassy dynamics, however, relaxation towards a stable phase can be significantly delayed, which enables a part of the initially encoded information to survive virtually unaffected for a long time. This project will explore open quantum generalisations of classical kinetically constrained models that are known to feature such glassy dynamics, with the goal to discover new physical systems that can store not only classical but also more fragile quantum information.The initial stage will consist of analytical studies of small systems. Those results will then guide adaptations of well-established exact and systematically improvable numerical techniques, for efficient simulations of larger systems. Experimentally feasible setups could become the focus in later years, with outcomes potentially paving a way for a novel type of quantum memories for quantum computing applications.