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

doi:10.1093/ietele/e90-c.3.599

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

Information Devices Division

Research output: Contribution to journal › Article › peer-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 language	English
Pages (from-to)	599-604
Number of pages	6
Journal	IEICE Transactions on Electronics
Volume	E90-C
Issue number	3
DOIs	https://doi.org/10.1093/ietele/e90-c.3.599
Publication status	Published - 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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10.1093/ietele/e90-c.3.599

Cite this

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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.",

keywords = "High-Tc superconductor, Josephson junction, Macroscopic quantum tunneling, Qubit, Resonant activation",

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T1 - Macroscopic quantum tunneling and resonant activation of current biased intrinsic Josephson junctions in Bi-2212

AU - Sato, Shigeo

AU - Inomata, Kunihiro

AU - Kinjo, Mitsunaga

AU - Kitabatake, Nobuhiro

AU - Nakajima, Koji

AU - Wang, Huabing

AU - Hatano, Takeshi

PY - 2007/3

Y1 - 2007/3

N2 - 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.

AB - 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.

KW - High-Tc superconductor

KW - Josephson junction

KW - Macroscopic quantum tunneling

KW - Qubit

KW - Resonant activation

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

Abstract

Keywords

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