The loss of fidelity due to quantum leakage for Josephson charge qubits
文献类型：期刊论文
| 作者 | Liang, XT; Xiong, YJ |
| 刊名 | MODERN PHYSICS LETTERS B
 |
| 出版日期 | 2005-04-10 |
| 卷号 | 19页码:371-378 |
| 关键词 | quantum leakage fidelity Josephson junction qubit |
| ISSN号 | 0217-9849 |
| 英文摘要 | In this paper we calculate the loss of fidelity due to quantum leakage for the Josephson charge qubit (JCQ). In this investigation the characteristic values and characteristic states of the Mathieu equation are used. It is shown that for present typical parameters of JCQ, E-J/E-ch ∼ 0.02, the loss of the fidelity per elementary operation is about 10(-4) which satisfies DiVincenzo's low decoherence criterion. By appropriately improving the designs of the Josephson junction, namely, decreasing E-J/E-ch to ∼ 0.01, the loss of fidelity per elementary operation can decrease even smaller to 10(-5). The first-order nonadiabatic correction is also obtained by using the approach. |
| WOS关键词 | COMPUTATION ; LOGIC |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000229569700003 |
| 出版者 | WORLD SCIENTIFIC PUBL CO PTE LTD |
| 源URL | [http://119.78.100.186/handle/113462/25289]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Liang, XT |
| 作者单位 | 1.Ningbo Univ, Dept Phys, Ningbo 315211, Peoples R China 2.Ningbo Univ, Inst Modern Phys, Ningbo 315211, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liang, XT,Xiong, YJ. The loss of fidelity due to quantum leakage for Josephson charge qubits[J]. MODERN PHYSICS LETTERS B,2005,19:371-378. |
| APA | Liang, XT,&Xiong, YJ.(2005).The loss of fidelity due to quantum leakage for Josephson charge qubits.MODERN PHYSICS LETTERS B,19,371-378. |
| MLA | Liang, XT,et al."The loss of fidelity due to quantum leakage for Josephson charge qubits".MODERN PHYSICS LETTERS B 19(2005):371-378. |
入库方式： OAI收割
来源：近代物理研究所
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