| Optimal effective current operator for flux qubits accounting for inductive effects | |
| Li, Zheng ; Wu, Tao ; Liu, Jianshe | |
| 2010-10-12 ; 2010-10-12 | |
| 关键词 | oscillators quantum computing superconducting junction devices PERSISTENT-CURRENT QUBIT DYNAMICS Physics, Condensed Matter |
| 中文摘要 | An optimal effective current operator for flux qubit has been investigated by taking account of the inductive effects of the circuit loop. The whole system is treated as two interacting subsystems: one is the inductance-free flux qubit consisting of three Josephson junctions and the other a high frequency LC oscillator. As the composite system hardly affords one excessively high-energy LC photon, an effective theory for the inductive flux qubit providing its physical variable operators has been achieved, which can take account of the inductive effects but does not include the additional degree of freedom for the LC oscillator. Considering the tradeoff between simplicity and accuracy, it has been revealed that the optimal effective current operator resulting in an error only on the order of L-3/2 provides an approximation of high accuracy, which is also verified numerically. |
| 语种 | 英语 ; 英语 |
| 出版者 | AMER PHYSICAL SOC ; COLLEGE PK ; ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA |
| 内容类型 | 期刊论文 |
| 源URL | [http://hdl.handle.net/123456789/82413]  |
| 专题 | 清华大学 |
| 推荐引用方式 GB/T 7714 | Li, Zheng,Wu, Tao,Liu, Jianshe. Optimal effective current operator for flux qubits accounting for inductive effects[J],2010, 2010. |
| APA | Li, Zheng,Wu, Tao,&Liu, Jianshe.(2010).Optimal effective current operator for flux qubits accounting for inductive effects.. |
| MLA | Li, Zheng,et al."Optimal effective current operator for flux qubits accounting for inductive effects".(2010). |
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