| 超导磁通量子比特中的光子辅助隧穿 |
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| 引用本文： | 孙国柱,王轶文,丛山桦,曹俊宇,陈健,康琳,许伟伟,于扬,吴培亨.超导磁通量子比特中的光子辅助隧穿[J].稀有金属材料与工程,2008(Z4). |
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| 作者姓名： | 孙国柱 王轶文 丛山桦 曹俊宇 陈健 康琳 许伟伟 于扬 吴培亨 |
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| 作者单位： | 南京大学超导电子学研究所;南京大学固体微结构国家实验室; |
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| 基金项目： | 国家自然科学基金(10704034,10534060); 国家“863”(2006AA03Z214); 国家“973”(2006CB601006) |
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| 摘 要： | 在极低温的条件下(T=20mK),对Nb/Al0x/Nb构建的超导磁通量子比特进行微波辐照,观察到了光子辅助隧穿。光子辅助隧穿的现象和共振隧穿有着很好的对应关系,证实了超导磁通量子比特中的量子化能级。改变微波功率,进一步得到了多光子作用下的光子辅助隧穿。
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| 关 键 词： | 超导量子比特 光子辅助隧穿 共振隧穿 |
Photon Assistant Tunneling in the Superconductor Flux Qubit |
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| Sun Guozhu,Wang Yiwen,Cong Shanhua,Cao Junyu,Chen Jian,Kang Lin,Xu Weiwei,Yu Yang,Wu Peiheng.Photon Assistant Tunneling in the Superconductor Flux Qubit[J].Rare Metal Materials and Engineering,2008(Z4). |
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| Authors: | Sun Guozhu Wang Yiwen Cong Shanhua Cao Junyu Chen Jian Kang Lin Xu Weiwei Yu Yang Wu Peiheng |
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| Affiliation: | Sun Guozhu1,Wang Yiwen2,Cong Shanhua1,Cao Junyu1,Chen Jian1,Kang Lin1,Xu Weiwei1,Yu Yang2,Wu Peiheng1 (1.Research Institute ofSuperconductor Electronics,Nanjing University,Nanjing 210093,China) (2.National Laboratory ofSolid State Microstructures,Department ofPhysics,China) |
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| Abstract: | We applied microwave irradiation on the superconductor flux qubit consisted of Nb/A1Ox/Nb at the temperature of 20 mK andobserved the photon assistant tunneling.The good correspondence between the photon assistant tunneling and the macroscopic resonanttunneling,which proved the quantized energy levels in the superconductor flux qubit.By varying the microwave power,we furthermoregot the results of the multiphoton assistant tunneling. |
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| Keywords: | superconductor qubit photon assistant tunneling microscopic resonant tunneling |
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