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Quantum Tunneling of Josephson Vortices in High-Impedance Long Junctions

2023-09-11
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Release : 2023-09-11
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Book Synopsis Quantum Tunneling of Josephson Vortices in High-Impedance Long Junctions by : Wildermuth, Matthias Micha

Download or read book Quantum Tunneling of Josephson Vortices in High-Impedance Long Junctions written by Wildermuth, Matthias Micha. This book was released on 2023-09-11. Available in PDF, EPUB and Kindle. Book excerpt: In the last decades, superconducting devices have emerged as a promising platform for quantum technologies, including quantum sensing and quantum computing. Their key elements are Josephson junctions, which allow for coherent supercurrent tunneling between two weakly linked superconductors. If such a junction is extended in one direction to a long junction, the superconducting phase difference can vary in space and time and may allow for quantized phase windings that drive supercurrent vortices.

Dynamics of Josephson Junctions and Circuits

2022-02-13 Science
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Release : 2022-02-13
Genre : Science
Kind : eBook
Book Rating : 196/5 ( reviews)

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Book Synopsis Dynamics of Josephson Junctions and Circuits by : Konstantin K. Likharev

Download or read book Dynamics of Josephson Junctions and Circuits written by Konstantin K. Likharev. This book was released on 2022-02-13. Available in PDF, EPUB and Kindle. Book excerpt: This monograph offers a detailed description of the statistics, dynamics and statics of Josephson junctions. Particular emphasis is placed on the dynamics of new circuits and analog and digital devices using single quanta of magnetic flux.

Dynamics of Josephson Junctions and Circuits

1986-08-11 Science
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Release : 1986-08-11
Genre : Science
Kind : eBook
Book Rating : 423/5 ( reviews)

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Book Synopsis Dynamics of Josephson Junctions and Circuits by : Likharev

Download or read book Dynamics of Josephson Junctions and Circuits written by Likharev. This book was released on 1986-08-11. Available in PDF, EPUB and Kindle. Book excerpt: "This monograph is intended to give a relatively complete review of Josephson junction dynamics as it stands in the mid-1980's. The main idea of the author is to present the reader with as many useful results as possible by the simplest means, rather than to demonstrate theoretical muscle. This is why almost all the topics requiring elaborate techniques for their analysis are shifted to the ends of the chapters and the most complex chapters, to the end of the book. Topics which are of relatively minor importance for further discussion are mainly presented in the form of 'problems' at the end of the sections." -- from Preface.

High Frequency Behavior of Long and Small Junctions

1993
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Release : 1993
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Book Rating : /5 ( reviews)

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Book Synopsis High Frequency Behavior of Long and Small Junctions by :

Download or read book High Frequency Behavior of Long and Small Junctions written by . This book was released on 1993. Available in PDF, EPUB and Kindle. Book excerpt: This research consisted of studies of the fundamentals and applications of long Josephson Junctions and very small junctions, all fabricated out of NbN. We have developed technology for fabricating by reactive sputtering high quality long Josephson junctions with current densities of 100- 1,000 A/sq cm Such junctions were used for studies of giant steps on the I-V curve caused by fluxon pinning and of macroscopic quantum tunneling down to 15 mK. A new system, a long Josephson junction biased at Fiske steps, is presented for studies of Macroscopic Quantum Tunneling. Our results show applications of fluxons in long Josephson junctions for Fluxon Oscillator, Voltage Standard, and for observing Macroscopic Coherent Tunneling. We, have also studied very small NbN junctions fabricated with a STM where single electron tunneling is observed. We were the first to present such tunneling at room temperature; this is important for applications. Students and postdoctoral fellows were involved in this research.

Superconducting Multilayer Technology for Josephson Devices : Technology, Engineering, Physics, Applications

2013-12-24 Science
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Release : 2013-12-24
Genre : Science
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Book Rating : 228/5 ( reviews)

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Book Synopsis Superconducting Multilayer Technology for Josephson Devices : Technology, Engineering, Physics, Applications by : Meckbach, Johannes Maximilian

Download or read book Superconducting Multilayer Technology for Josephson Devices : Technology, Engineering, Physics, Applications written by Meckbach, Johannes Maximilian. This book was released on 2013-12-24. Available in PDF, EPUB and Kindle. Book excerpt: Within this book fabrication processes for high-quality Josephson junctions based on niobium and aluminum oxide as well as niobium nitride and aluminum nitride on various substrates are discussed. Techniques for achieving a planar chip topography and sub-μm lateral dimensions, aiding the realization of sophisticated Josephson devices such as SQUIDs, flux-flow oscillators and long Josephson junctions with artificial phase discontinuities, are presented in detail.

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