开放系统工具用于非热化封闭量子系统
Unnati Akhouri1, Sarah Shandera1, Jackson Henry2
1Pennsylvania State University, Pennsylvania State University, Institute for Gravitation and the Cosmos, The , University Park, Pennsylvania 16802, USA and Department of Physics, The , University Park, Pennsylvania 16802, USA.
Physical review. E
|October 21, 2025
概括
我们设计了量子电路动力学,在量子比特网络中创建独特的不平衡稳定状态. 这些网络显示出独特的长期记忆和不均的动态,与典型的热化系统不同.
科学领域:
- 量子信息科学 量子信息科学
- 凝聚物质理论 凝聚物质理论
- 量子多体系统是一个量子多体系统.
背景情况:
- 对于量子技术来说,了解量子系统是如何脱离平衡的至关重要.
- 在孤立的量子系统中描述非平衡稳定状态 (NESS) 是一个重大的理论挑战.
- 以前的研究往往侧重于全球热化系统,使受约束的,非热化系统的动态不那么被探索.
研究的目的:
- 设计和分析受约束的,对称的量子电路动力学,产生可区分的非平衡稳定状态.
- 调查这些工程量子网络中局部内存和不均动态的持久性.
- 探索特征和区分这些新型稳定状态与热化对应物的方法.
主要方法:
- 设计特定的受约束,对称的量子电路架构.
- 分析量子比特网络动态,使用开放量子系统和相位共变进化的概念.
- 稳定状态属性的量化,包括距离同质性,相互信息网络的复杂性,状态空间体积和可提取的工作.
- 在量子比特传播器中研究非完全正图和相关结构.
主要成果:
- 成功设计的量子电路表现出受约束的,对称的动态,产生强大的非平衡稳定状态.
- 证明这些网络保持了初始条件的本地记忆,并且在长时间内表现出不均的子系统动态.
- 表明这些状态可以清楚地与大约相同大小的热化网络区分开来.
- 使用复杂度,热力学效用 (可提取的工作) 和传播器图形属性的措施量化差异.
结论:
- 工程量子电路提供了一条可行的途径,以实现和控制具有独特属性的非平衡稳定状态.
- 设计的系统为研究量子网络中的约束,对称性和非平衡动态的相互作用提供了一个平台.
- 这些发现对理解量子热力学,信息处理和量子动力学失衡的基本性质有影响.
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