Macroscopic quantum tunneling and resonant activation of current biased intrinsic Josephson junctions in Bi-2212

被引：2
|
作者：
Sato, Shigeo [1 ]
Inomata, Kunihiro
Kinjo, Mitsunaga
Kitabatake, Nobuhiro
Nakajima, Koji
Wang, Huabing
Hatano, Takeshi
机构：
[1] Tohoku Univ, Res Inst Elect Commun, Sendai, Miyagi 9808577, Japan
[2] RIKEN, Frontier Res Syst, Tsukuba, Ibaraki 3050841, Japan
[3] Univ Ryukyus, Fac Engn, Dept Elect & Elect Engn, Okinawa 9030213, Japan
[4] Natl Inst Mat Sci, Nano Syst Funct Ctr, Tsukuba, Ibaraki 3050047, Japan
来源：
IEICE TRANSACTIONS ON ELECTRONICS | 2007年 / E90C卷 / 03期
关键词：
Josephson junction; macroscopic quantum tunneling; high-Tc superconductor; resonant activation; qubit;
D O I：
10.1093/ietele/e90-c.3.599
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The utilization of a high-Tc superconductor for implementing a superconducting qubit is to be expected. Recent researches on the quantum property of Josephson junctions in high-Tc superconductors indicate that the low energy quasiparticle excitation is weak enough to observe the macroscopic quantum tunneling. Therefore, a detailed study on the quantum property of high-Tc Josephson junctions becomes more important for applications. We show our experimental results of the macroscopic tunneling of current biased intrinsic Josephson junctions in Bi-2212 and its resonant activation in the presence of microwave radiation.
引用
收藏
页码：599 / 604
页数：6
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