2021/10/13 by Shi-fan Qi, Jun Jing
Computer Science · Mathematics · Physics and Astronomy · #Cavity quantum electrodynamics #Master equation #Mathematics #Mechanical and Optical Resonators #Open quantum system #Optoelectronics #Photon #Physics #Quantum #Quantum Information and Cryptography #Quantum entanglement #Quantum information #Quantum mechanics #Quantum optics and atomic interactions #Qubit #Resonator #Topology (electrical circuits) #quant-ph
paper · pdf · doi:10.1103/physreva.105.022624
published as Phys. Rev. A.105.022624 (2022)
arxiv created 2021/10/13 · openalex publication_date 2022/02/25 · arxiv updated 2022/03/01 · openalex created_date 2022/03/02 · openalex updated_date 2026/08/05
We propose a level-resolved protocol in a hybrid architecture for connecting a superconducting qubit and a magnon mode contained within a microwave cavity (resonator) to generate the local and global entangled states, enabling a wide range of applications in quantum communication, quantum metrology, and quantum information processing. Exploiting the high-degree of controllability in such a hybrid qubit-photon-magnon system, we derive effective Hamiltonians at the second- or the third-order resonant points by virtue of the strong counter-rotating interactions between the resonator and the qubit and between the resonator and the magnon. Consequently, we can efficiently generate the Bell states of the photon-magnon and the qubit-magnon subsystems and the Greenberger-Horne-Zeilinger state of the whole hybrid system. We also check the robustness of our protocol against the environmental noise by the Lindblad master equation. Our work makes this hybrid platform of high-degree of controllability a high-fidelity candidate for the realization of the maximally-entangled multiple states.