Fine-grained uncertainty relation for open quantum system

作     者：Shang-Bin Han Shuai-Jie Li Jing-Jun Zhang Jun Feng 韩尚斌;李帅杰;张精俊;冯俊

作者机构：School of PhysicsXi'an Jiaotong UniversityXi'an 710049China 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2021年第30卷第6期

页      面：37-42页

核心收录：

学科分类：07[理学] 0805[工学-材料科学与工程（可授工学、理学学位）] 070201[理学-理论物理] 0704[理学-天文学] 0702[理学-物理学] 

基　　金：Project supported by the National Natural Science Foundation of China(Grant No.12075178) the Natural Science Basic Research Plan in Shaanxi Province of China(Grant No.2018JM1049) 

主　　题：open quantum system fine-grained uncertainty relation Unruh effect 

摘      要：The fine-grained uncertainty relation (FUR) is investigated for accelerating open quantum system, which manifests the celebrated Unruh effect, a crucial piece of the jigsaw for combining relativity and quantum physics. For a single detector, we show that the inevitable Unruh decoherence can induce a smaller FUR uncertainty bound, which indicates an additional measurement uncertainty may exist. For an open system combined with two detectors, via a nonlocal retrieval game, the related FUR uncertainty bound is determined by the non-classical correlation of the system. By estimating the maximal violation of Bell inequality for an accelerating system, we show that the FUR uncertainty bound can be protected from Unruh decoherence, due to quantum correlation generated through Markovian dynamics.