Abdumalikov, Abdufarrukh A. and Astafiev, Oleg and Nakamura, Yasunobu and Pashkin, Yuri A. and Tsai, JawShen (2008) Vacuum Rabi splitting due to strong coupling of a flux qubit and a coplanar-waveguide resonator. Physical review B, 78 (18). -. ISSN 1098-0121
Full text not available from this repository.Abstract
We have experimentally studied a superconducting flux qubit strongly coupled to a single mode of a high-quality transmission-type coplanar-waveguide resonator. The qubit-resonator coupling is revealed in the resonator transmission spectrum as a vacuum Rabi splitting. In the dispersive regime the qubit energy levels are spectroscopically probed. We observe a shift in the qubit transition frequency that linearly depends on the number of photons in the resonator, which is attributed to the ac-Zeeman shift. The observations are in agreement with the theoretical predictions.