Theory for collective macroscopic tunneling in high-Tc intrinsic Josephson junctions

M. Machida, T. Koyama

研究成果: Article査読

2 被引用数 (Scopus)

抄録

On the basis of the theory for the capacitive coupling in intrinsic Josephson junctions (IJJ's), we theoretically study the macroscopic quantum tunneling in the switching dynamics into the voltage states in IJJ. The effective action obtained by using the path integral formalism reveals that the capacitive coupling splits each of the lowest and higher quantum levels, which are given inside Josephson potential barrier of the single junction derived by dropping off the coupling, into levels composed of the number of junction (N). This level splitting can cause multiple low-frequency Rabi-oscillations and enhance the switching probability compared to the conventional Caldeira-Leggett theory. Furthermore, a possibility as a naturally built-in multi-qubit is discussed.

本文言語English
ページ(範囲)84-88
ページ数5
ジャーナルPhysica C: Superconductivity and its applications
463-465
SUPPL.
DOI
出版ステータスPublished - 2007 10 1

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • エネルギー工学および電力技術
  • 電子工学および電気工学

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