中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Macroscopic quantum tunneling and qubit design parameters of Bi(2)Sr(2)CaCu(2)O(8+delta) surface intrinsic Josephson junctions

文献类型:期刊论文

作者Cui, DJ ; Yu, HF ; Peng, ZH ; Cao, W ; Zhu, XB ; Tian, Y ; Chen, GH ; Lin, DH ; Gu, CZ ; Zheng, DN ; Jing, XN ; Lu, L ; Zhao, SP
刊名SUPERCONDUCTOR SCIENCE & TECHNOLOGY
出版日期2008
卷号21期号:12
关键词ZERO-VOLTAGE STATE TEMPERATURES QUANTIZATION OSCILLATIONS DISSIPATION SYSTEMS
ISSN号0953-2048
通讯作者Cui, DJ: Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, POB 603, Beijing 100080, Peoples R China.
中文摘要Macroscopic quantum tunneling (MQT) has been demonstrated recently in a Bi(2)Sr(2)CaCu(2)O(8+delta) surface intrinsic Josephson junction (SIJJ) with its critical current density J(c) below 100 A cm(-2) and its size below 1 mu m. In this work, we present a study of the switching current distributions of SIJJs fabricated on the same crystal, with J(c) > 500 A cm(-2) and size of 0.8 and 1.6 mu m. MQT is clearly observed, and the crossover from MQT to thermal activation (TA) is seen. Our analysis shows that the data agree well with the theoretical predictions of MQT and TA for different-sized SIJJs when parameters that roughly scale with the SIJJ size are used. In the crossover regime, the data are found to be better fitted by considering quantum corrections to TA. We discuss the realistic design of phase- and flux-type qubits using the experimentally attainable SIJJ parameters, which shows that the SIJJs, with their controllable J(c) and size (or junction capacitance), are feasible for qubit applications in the future.
收录类别SCI
资助信息National Natural Science Foundation of China [10474129, 10534060]; Ministry of Science and Technology of China [2006CB601007, 2006CB921107]
语种英语
公开日期2013-09-18
源URL[http://ir.iphy.ac.cn/handle/311004/41113]  
专题物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式
GB/T 7714
Cui, DJ,Yu, HF,Peng, ZH,et al. Macroscopic quantum tunneling and qubit design parameters of Bi(2)Sr(2)CaCu(2)O(8+delta) surface intrinsic Josephson junctions[J]. SUPERCONDUCTOR SCIENCE & TECHNOLOGY,2008,21(12).
APA Cui, DJ.,Yu, HF.,Peng, ZH.,Cao, W.,Zhu, XB.,...&Zhao, SP.(2008).Macroscopic quantum tunneling and qubit design parameters of Bi(2)Sr(2)CaCu(2)O(8+delta) surface intrinsic Josephson junctions.SUPERCONDUCTOR SCIENCE & TECHNOLOGY,21(12).
MLA Cui, DJ,et al."Macroscopic quantum tunneling and qubit design parameters of Bi(2)Sr(2)CaCu(2)O(8+delta) surface intrinsic Josephson junctions".SUPERCONDUCTOR SCIENCE & TECHNOLOGY 21.12(2008).

入库方式: OAI收割

来源:物理研究所

浏览0
下载0
收藏0
其他版本

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。