Quantum entanglement generation on magnons assisted with microwave cavities coupled to a superconducting qubit  

作　　者：Jiu-Ming Li Shao-Ming Fei 

机构地区：[1]School of Mathematical Sciences,Capital Normal University,Beijing 100048,China

出　　处：《Frontiers of physics》2023年第4期311-320,共10页物理学前沿（英文版）

基　　金：supported by the National Natural Science Foundation of China(NSFC)under Grant Nos.12075159 and 12171044;Beijing Natural Science Foundation(Grant No.Z190005);the Academician Innovation Platform of Hainan Province.

摘　　要：We present protocols to generate quantum entanglement on nonlocal magnons in hybrid systems composed of yttrium iron garnet(YIG)spheres,microwave cavities and a superconducting(SC)qubit.In the schemes,the YIGs are coupled to respective microwave cavities in resonant way,and the SC qubit is placed at the center of the cavities,which interacts with the cavities simultaneously.By exchanging the virtual photon,the cavities can indirectly interact in the far-detuning regime.Detailed protocols are presented to establish entanglement for two,three and arbitrary N magnons with reasonable fidelities.

关 键 词：MAGNON superconducting qubit quantum electrodynamics quantum entanglement indirect interaction 

分 类 号：O413[理学—理论物理]