Dynamic entanglement for continuous variables in an electric field background  

作　　者：Shu-Min Wu Jin-Xuan Li Xiao-Wei Fan Wen-Mei Li Xiao-Li Huang Hao-Sheng Zeng 

机构地区：[1]Department of Physics,Liaoning Normal University,Dalian 116029,China [2]Department of Physics,Hunan Normal University,Changsha 410081,China

出　　处：《Communications in Theoretical Physics》2023年第6期66-77,共12页理论物理通讯（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.12205133,LJKQZ20222315 and 2021BSL013)

摘　　要：Quantum entanglement is a typical nonclassical correlation.Here,we use this concept to analyze quantum entanglement for continuous variables generated by the Schwinger pair production for constant and pulsed electric fields.An initial two-mode entangled state evolves into a three-mode entangled state through a Gaussian channel of the Schwinger effect,which encodes the information about the Schwinger effect.By detecting the entanglement of the output three-mode state,we obtain the optimal parameters for easier to generate particle-antiparticle pairs.We find that the generated 1→2 entanglement is more sensitive to the parameters than the generated 1→1 entanglement.Therefore,we should choose the generated 1→2 entanglement to extract information.We argue that extracting the optimal parameters from quantum entanglement may guide future experiments.

关 键 词：Schwinger effect continuous variable quantum entanglement 

分 类 号：O413[理学—理论物理]