P. Forn-Diaz and J E Mooij et al., PRL 105, 237001(2010) arXiv:1005.1559 Spectrum of the flux qubit coupled to the lc resonator. 9 001 g85 Ble 22r sideband Qubit >10 更重-0.5x10 001 8 Photon 002 excited 6 Two-photoh qubit blue 403 sidebands 二 0246810 ①/Φ-0.5 x10P. Forn-Diaz and J. E. Mooij et al., PRL 105, 237001 (2010). arXiv: 1005.1559. Spectrum of the flux qubit coupled to the LC resonator