An Off-Resonant Quantum Collision Model:Realizing a Qubit Coupled with an Effective Negative-Temperature Bath

作     者：Wei-Bin Yan Zhong-Xiao Man Ying-Jie Zhang Yun-Jie Xia 闫伟斌;满忠晓;张英杰;夏云杰

作者机构：College of Physics and EngineeringQufu Normal UniversityQufu 273165China 

出 版 物：《Chinese Physics Letters》 (中国物理快报(英文版))

年 卷 期：2025年第42卷第1期

页      面：15-22页

核心收录：

学科分类：07[理学] 070201[理学-理论物理] 0702[理学-物理学] 

基　　金：supported by the Taishan Scholar Project of Shandong Province(Grant No.tsqn201812059) the National Natural Science Foundation of China(Grant Nos.11505023,11974209,and 12274257) 

主　　题：dynamics. resonant collision 

摘      要：The quantum collision model provides a promising tool for investigating system-bath *** studies of quantum collision models,however,are in the resonant *** quantum dynamics,the off-resonant interactions often result in exciting ***,it is important to investigate the quantum collision models in the off-resonant regime.A bath with a negative absolute temperature is expected to be instrumental in the development of thermal *** design of an effective bath with negative absolute temperature coupled to a qubit is a significant component for developing such thermal *** this study,we establish an effective negative-absolute-temperature bath coupled to a qubit with a quantum collision model in the far-off-resonant *** conduct a detailed systematic investigation of the off-resonant collision model and determine the presence of an additional constraint on the collision duration resulting from the far-off resonant *** dynamics of the collision model in the far-off-resonant regime are different from those beyond the far-off-resonant *** simulations are used to confirm the validity of the proposed approach.