三体里德堡超级原子的关联动力学研究  

Correlated dynamics of three-body Rydberg superatoms

作　　者：白文杰 严冬[1] 韩海燕[1] 华硕 谷开慧[4] Bai Wen-Jie;Yan Dong;Han Hai-Yan;Hua Shuo;Gu Kai-Hui(School of Science and Key Laboratory of Materials Design and Quantum Simulation,Changchun University,Changchun 130022,China;Center for Quantum Sciences,Northeast Normal University,Changchun 130117,China;School of Science,Jilin Institute of Chemical Technology,Jilin 130000,China;School of Science,Jilin Engineering Normal University,Changchun 130052,China)

机构地区：[1]长春大学理学院,材料设计与量子模拟实验室,长春130022 [2]东北师范大学,量子科学中心,长春130117 [3]吉林化工学院理学院,吉林130000 [4]吉林工程技术师范学院应用理学院,长春130052

出　　处：《物理学报》2022年第1期100-107,共8页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:11874004,11204019);吉林省教育厅科学基金(批准号:JJKH20200557KJ);吉林省科技厅2021年自然科学基金(批准号:20210101411JC);长春大学基金项目;吉林工程技术师范学院校级科研项目(批准号:BSKJ201907)资助的课题。

摘　　要：因为寿命长,并且原子间相互作用容易操控,所以里德堡原子在量子信息与量子光学领域具有极大的吸引力.特别地,偶极阻塞效应成为执行很多量子信息处理任务的物理资源.本文基于严格的偶极阻塞效应,将捕获在三个磁光阱中的二能级里德堡原子系综看作超级原子,在此基础上研究原子数目可调控的三体里德堡超级原子的同相和反相动力学行为,同时实现W态和两种最大纠缠态的制备.本工作在量子操控和量子信息处理方面具有潜在的应用前景.Owing to the long lifetime of Rydberg atom, easy to operate and easy to control the interaction between Rydberg atoms, Rydberg atom has attracted considerable attention in quantum information and quantum optics fields. Specially, the anti-blockade effect, as a physical resource, can be used to implement various tasks in quantum information processing. Based on the rigid dipole blockade, an ensemble of two-level Rydberg atoms trapped in three magneto-optical traps can be regarded as a superatom. Based on the superatom model, the inphase and anti-phase dynamics of the three-body Rydberg superatoms are studied by adjusting the numbers of atoms, and the W state and two kinds of maximal entangled states are generated simultaneously. Our work has great potential applications in coherent manipulation and quantum information processing.The numerical simulations are performed based on the superatom model and thereby the formidable obstacle that the Hilbert space dimension grows exponentially with the particle number increasing can be completely removed. As a result, the quantum control and quantum entanglement can be achieved from the single-quanta level to the mesoscopic level.

关 键 词：里德堡原子 超级原子 偶极阻塞 量子纠缠 

分 类 号：O562[理学—原子与分子物理]