Springer eBooks

Josephson Devices

Antonio Alci Barone, S. Pagano

Published Jun 24, 2007• 2 citations

DOI: 10.1007/3-540-46629-0_3

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Observation of Bistability in a Josephson Device

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Springer eBooks

Josephson Devices

Antonio Alci Barone, S. Pagano

Published Jun 24, 2007• 2 citations

Publisher

DOI: 10.1007/3-540-46629-0_3

Related papers

Observation of Bistability in a Josephson Device

B. Muhlfelder, Warren W. Johnson

Topical Meeting on Optical Bistability (OB)Jan 1, 19830 citations

Josephson Digital Devices

Hisao Hayakawa, Seigo Kotani

Springer eBooksJan 1, 19932 citations

Josephson Weak-Link Devices

Arnold H. Silver, James Edward Zimmerman

Elsevier eBooksJan 1, 197521 citations

Quantum behavior of underdamped Josephson devices

Valentina Corato, S. Rombetto, C. Granata +6 more

We present an experimental characterization of $\mathrm{Nb}∕\mathrm{Al}{\mathrm{O}}_{x}∕\mathrm{Nb}$ Josephson devices in the quantum regime. Josephson junctions and fully integrated Josephson devices consisting of an rf SQUID coupled to a read-out system based on a dc SQUID have been measured. Data on the decay rates from the metastable states show evidence of macroscopic quantum tunneling with a very low dissipation level and a high isolation of the devices from the external environment.We present an experimental characterization of $\mathrm{Nb}∕\mathrm{Al}{\mathrm{O}}_{x}∕\mathrm{Nb}$ Josephson devices in the quantum regime. Josephson junctions and fully integrated Josephson devices consisting of an rf SQUID coupled to a read-out system based on a dc SQUID have been measured. Data on the decay rates from the metastable states show evidence of macroscopic quantum tunneling with a very low dissipation level and a high isolation of the devices from the external environment.

Physical Review BNov 1, 20043 citations

IF output characteristics of Josephson mixer

Keiichi Yamaguchi, Akira Kawaji, Katsumi Suzuki +2 more

The Josephson junction device is promising as a mixer for regions from millimeter wave to infrared. It is important to analyze Josephson devices to determine the circuit parameters and operating points of the circuits. However, it is difficult to analyze the mixer operation because of the nonlinear characteristic of the Josephson junction device. Therefore, small signal analysis has been conducted in characterizing the Josephson junction device. In this study, a detailed characterization of the IF output characteristic was obtained by introducing the concept of IF Shapiro steps. That is, it was determined that the minima that are not present in the local-oscillator Shapiro steps are present in the Josephson junction mixer output. In addition the impedance of the Josephson junction device was discussed and illustrated using a Smith chart. In this paper, the theoretical result was proved by a mixing experiment on the step-edge junction. As a result, the minima points in the IF output were confirmed. © 1997 Scripta Technica, Inc. Electron Comm Jpn Pt 2, 80(3): 69–79, 1997The Josephson junction device is promising as a mixer for regions from millimeter wave to infrared. It is important to analyze Josephson devices to determine the circuit parameters and operating points of the circuits. However, it is difficult to analyze the mixer operation because of the nonlinear characteristic of the Josephson junction device. Therefore, small signal analysis has been conducted in characterizing the Josephson junction device. In this study, a detailed characterization of the IF output characteristic was obtained by introducing the concept of IF Shapiro steps. That is, it was determined that the minima that are not present in the local-oscillator Shapiro steps are present in the Josephson junction mixer output. In addition the impedance of the Josephson junction device was discussed and illustrated using a Smith chart. In this paper, the theoretical result was proved by a mixing experiment on the step-edge junction. As a result, the minima points in the IF output were confirmed. © 1997 Scripta Technica, Inc. Electron Comm Jpn Pt 2, 80(3): 69–79, 1997

Electronics and Communications in Japan (Part II Electronics)Mar 1, 199710 citations

Josephson Detection

M. Renard

Astrophysics and space science libraryJan 1, 19720 citations

We present an experimental characterization of

\mathrm{Nb}∕\mathrm{Al}{\mathrm{O}}_{x}∕\mathrm{Nb}

Josephson devices in the quantum regime. Josephson junctions and fully integrated Josephson devices consisting of an rf SQUID coupled to a read-out system based on a dc SQUID have been measured. Data on the decay rates from the metastable states show evidence of macroscopic quantum tunneling with a very low dissipation level and a high isolation of the devices from the external environment.