Spectroscopy and coherent manipulation of single and coupled flux qubits |
| |
| Authors: | Wu Yu-Lin Deng Hui Huang Ke-Qiang Tian Ye Yu Hai-Feng Xue Guang-Ming Jin Yi-Rong Li Jie Zhao Shi-Ping and Zheng Dong-Ning |
| |
| Affiliation: | Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China |
| |
| Abstract: | Measurements of three-junction flux qubits, both single flux qubits and coupled flux qubits, using a coupled direct current superconducting quantum interference device (dc-SQUID) for readout are reported. The measurement procedure is described in detail. We performed spectroscopy measurements and coherent manipulations of the qubit states on a single flux qubit, demonstrating quantum energy levels and Rabi oscillations, with Rabi oscillation decay time TRabi = 78 ns and energy relaxation time T1 = 315 ns. We found that the value of T Rabi depends strongly on the mutual inductance between the qubit and the magnetic coil. We also performed spectroscopy measurements on inductively coupled flux qubits. |
| |
| Keywords: | quantum computing flux qubit Rabi oscillation dc-SQUID |
| 本文献已被 CNKI 维普 等数据库收录！ |
|
