Author Affiliations
Abstract
College of Physics and Communication Electronics, Jiangxi Normal University, Nanchang 3300222 Key Laboratory of Optoelectronic and Telecommunication of Jiangxi, Nanchang 3300223 Department of Physics, Anqing Teachers College, Anqing 246011
In the Born-Markov approximation and two-level approximation, and using the Bloch-Redfield equation, the decoherence property of superconducting quantum circuit with a flux qubit is investigated. The influence on decoherence of the mutual inductance coupling between the circuit components is complicated. The mutual inductance coupling between different loops will decrease the decoherence time. However, the mutual inductance coupling of the same loop, in a certain interval, will increase the decoherence time. Therefore, we can control the decoherence time by changing the mutual inductance parameters such as the strength and direction of coupling.
磁通量子比特 消相干 玻恩-马尔科夫近似 270.0270 Quantum optics 000.6800 Theoretical physics Chinese Optics Letters
2009, 7(1): 0178