论文题目:Coherent Coupling of Superconducting Quantum Bit and Magneton Driven by Microwave
作者:Da Xu, Yipu Wang, Tiefu Li , Jianqiang You
期刊:Acta Physica Sinica
年份:2022.Mar.
卷(期)及页码:Vol.71, No.15, pp.1-8
摘要:
The experiment shows the coherent strong coupling between the magnon and the driving dressed state of the superconducting qubit in the yttrium iron garnet (YIG) crystal ball. The addition of the magnon makes the formation of a double dressed state in the superconducting qubit. In the experiment, a yttrium iron garnet crystal ball and a superconducting qubit are placed in a three-dimensional cavity at the same time, Couple with the eigenfield (TE102 mode) in the resonant cavity through magnetic dipole interaction and electric dipole interaction, and realize effective coherent strong coupling between them through the cavity mode as the medium. Apply a resonant microwave drive to the superconducting quantum bit and change the drive intensity, and measure the change of the energy level splitting of the coupling system with the drive intensity, The model of the coupling between the particle hole pair and the Bose field is theoretically calculated. The experimental results are in good agreement with the theoretical calculation results in most of the driving intensity range, indicating that the driven bit-magneton coupling system can be used to simulate the coupling system between the particle hole symmetry pair and the Bose field. The hybrid quantum system used in this paper provides a new way to simulate the hybrid system of boson and fermion