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它们的配置中编码的任何信息都是有害的，系统在很长一段时间内都处于独立于初始条件的稳定阶段。这对量子技术应用形成了一个关键问题，量子信息在实验平台上随着时间的推移而被擦除。然而，在具有玻璃态动力学特征的经典软物质中，向稳定相的弛豫可以被显著延迟，这使得最初编码的信息的一部分能够在很长一段时间内几乎不受影响地存活下来。该项目将探索具有玻璃态动力学特征的经典动力学约束模型的开放量子概括，目标是发现不仅可以存储经典信息，而且可以存储更脆弱的量子信息的新物理系统。初始阶段将包括小型系统的分析研究。然后，这些结果将指导适应完善的精确和系统可改进的数值技术，有效地模拟更大的系统。实验上可行的设置可能会成为未来几年的焦点，其结果可能为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.