Discrimination of coherent states via atom–field interaction without rotation wave approximation

作     者：Jin-Hua Zhang Fu-Lin Zhang Mai-Lin Liang Zhi-Xi Wang Shao-Ming Fei Jin-Hua Zhang;Fu-Lin Zhang;Mai-Lin Liang;Zhi-Xi Wang;Shao-Ming Fei

作者机构：Department of PhysicsXinzhou Teachers UniversityXinzhou 034000China Department of PhysicsSchool of ScienceTianjin UniversityTianjin 300072China School of Mathematical SciencesCapital Normal UniversityBeijing 100048China Max-Planck-Institute for Mathematics in the SciencesD-04103 LeipzigGermany 

出 版 物：《Communications in Theoretical Physics》 (理论物理通讯（英文版）)

年 卷 期：2023年第75卷第6期

页      面：78-85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：funded by the NSF of China(Grant Nos.11675119,12075159,11575125,12171044) Shanxi Education Department Fund(2020L0543) Beijing Natural Science Foundation(Z190005) Academy for Multidisciplinary Studies,Capital Normal University the Academician Innovation Platform of Hainan Province the Shenzhen Institute for Quantum Science and Engineering,Southern University of Science and Technology(No.SIQSE202001) 

主　　题：state discrimination Jaynes-Cummings model rotation wave approximation 

摘      要：Quantum state discrimination is an important part of quantum information *** investigate the discrimination of coherent states through a Jaynes-Cummings(JC)model interaction between the field and the ancilla without rotation wave approximation(RWA).We show that the minimum failure probability can be reduced as RWA is eliminated from the JC model and the non-RWA terms accompanied by the quantum effects of fields(*** virtualphoton process in the JC model without RWA)can enhance the state *** JC model without RWA for unambiguous state discrimination is superior to ambiguous state discrimination,particularly when the number of sequential measurements *** state discrimination implemented via the non-RWA JC model is beneficial to saving resource costs.