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

Shigeo Sato, Kunihiro Inomata, Mitsunaga Kinjo, Nobuhiro Kitabatake, Koji Nakajima, Huabing Wang, Takeshi Hatano

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)599-604
Number of pages6
JournalIEICE Transactions on Electronics
VolumeE90-C
Issue number3
DOIs
Publication statusPublished - 2007 Mar

Keywords

  • High-Tc superconductor
  • Josephson junction
  • Macroscopic quantum tunneling
  • Qubit
  • Resonant activation

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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