Macroscopic Quantum Tunneling In Josephson Tunnel Junctions And Coulomb Blockade In Single Small Tunnel Junctions
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Author | : |
Publisher | : |
Total Pages | : 171 |
Release | : 1991 |
Genre | : |
ISBN | : |
Download Macroscopic Quantum Tunneling in Josephson Tunnel Junctions and Coulomb Blockade in Single Small Tunnel Junctions Book in PDF, Epub and Kindle
Experiments investigating the process of macroscopic quantum tunneling in a moderately-damped, resistively shunted, Josephson junction are described, followed by a discussion of experiments performed on very small capacitance normal-metal tunnel junctions. The experiments on the resistively-shunted Josephson junction were designed to investigate a quantum process, that of the tunneling of the Josephson phase variable under a potential barrier, in a system in which dissipation plays a major role in the dynamics of motion. All the parameters of the junction were measured using the classical phenomena of thermal activation and resonant activation. Theoretical predictions are compared with the experimental results, showing good agreement with no adjustable parameters; the tunneling rate in the moderately damped (Q (almost equal to) 1) junction is seen to be reduced by a factor of 300 from that predicted for an undamped junction. The phase is seen to be a good quantum-mechanical variable. The experiments on small capacitance tunnel junctions extend the measurements on the larger-area Josephson junctions from the region in which the phase variable has a fairly well-defined value, i.e. its wavefunction has a narrow width, to the region where its value is almost completely unknown. The charge on the junction becomes well-defined and is predicted to quantize the current through the junction, giving rise to the Coulomb blockade at low bias. I present the first clear observation of the Coulomb blockade in single junctions. The electrical environment of the tunnel junction, however, strongly affects the behavior of the junction: higher resistance leads are observed to greatly sharpen the Coulomb blockade over that seen with lower resistance leads. I present theoretical descriptions of how the environment influences the junctions; comparisons with the experimental results are in reasonable agreement.
Author | : Andrew Nicholas Cleland |
Publisher | : |
Total Pages | : 350 |
Release | : 1991 |
Genre | : Josephson junctions |
ISBN | : |
Download Macroscopic Quantum Tunneling in Josephson Tunnel Junctions and Coulomb Blockade in Single Small Tunnel Junctions Book in PDF, Epub and Kindle
Author | : Hermann Grabert |
Publisher | : Springer Science & Business Media |
Total Pages | : 344 |
Release | : 2013-11-27 |
Genre | : Science |
ISBN | : 1475721668 |
Download Single Charge Tunneling Book in PDF, Epub and Kindle
The field of single charge tunneling comprises of phenomena where the tunneling of a microscopic charge, usually carried by an electron or a Cooper pair, leads to macro scopically observable effects. The first conference entirely devoted to this new field was the NATO Advanced Study Institute on Single Charge Tunneling held in Les Hauches, France, March 5-15, 1991. This book contains a series of tutorial articles based on lectures presented at the meeting. It was intended to provide both an introduction for nonexperts and a valuable reference summarizing the state of the art of single charge tun neling. A complementary publication with contributions by participants of the NATO Advanced Study Institute is the Special Issue on Single Charge Tunneling of Zeitschrift für Physik B, Vol. 85, pp. 317-468 (1991 ). That issue with original papers provides a snapshot af the leading edge of current research in the field. The success of the meeting and the publicatian of this volume was made possible through the generaus support af the NATO Scientific A:ffairs Division, Brussels, Belgium. The Centre de Physique des Hauches has provided a superbly situated conference site and took care af many lacal arrangements. Both far the preparation of the conference and the handling af some manuscripts the suppart af the Centre d 'Etudes de Saclay was essential. The editing of the proceedings volume would not have been passible without the dedicated efforts of Dr. G. -1. Ingald, who tailared a 1\.
Author | : Ludivica Baselgia-Stahel |
Publisher | : |
Total Pages | : 316 |
Release | : 1992 |
Genre | : Josephson junctions |
ISBN | : |
Download Macroscopic Quantum Tunneling in Long Josephson Junctions Book in PDF, Epub and Kindle
Author | : Herbert P. Simanjuntak |
Publisher | : |
Total Pages | : 206 |
Release | : 1990 |
Genre | : Josephson junctions |
ISBN | : |
Download Macroscopic Quantum Tunneling in Josephson Junctions Book in PDF, Epub and Kindle
Author | : |
Publisher | : |
Total Pages | : 556 |
Release | : 1993 |
Genre | : Aeronautics |
ISBN | : |
Download Scientific and Technical Aerospace Reports Book in PDF, Epub and Kindle
Author | : Georg Wild |
Publisher | : |
Total Pages | : 78 |
Release | : 2004 |
Genre | : |
ISBN | : |
Download Macroscopic Quantum Tunneling in Josephson Junctions Book in PDF, Epub and Kindle
Author | : C Giovannella |
Publisher | : World Scientific |
Total Pages | : 410 |
Release | : 1995-11-16 |
Genre | : |
ISBN | : 9814548898 |
Download Macroscopic Quantum Phenomena And Coherence In Superconducting Networks Book in PDF, Epub and Kindle
This volume is a review on the recent progresses done in the understanding of the physics of the superconducting arrays. It consists of five sessions:All the topical contributions go well beyond those characteristics of the condensed matter physics and offer links to the domains of the nonlinear science, complex systems and statistical mechanics.
Author | : |
Publisher | : |
Total Pages | : 582 |
Release | : 1991-10 |
Genre | : Power resources |
ISBN | : |
Download Energy Research Abstracts Book in PDF, Epub and Kindle
Author | : Colin P. Williams |
Publisher | : Springer |
Total Pages | : 490 |
Release | : 2003-05-20 |
Genre | : Computers |
ISBN | : 3540492089 |
Download Quantum Computing and Quantum Communications Book in PDF, Epub and Kindle
This book contains selected papers presented at the First NASA International Conference on Quantum Computing and Quantum Communications, QCQC'98, held in Palm Springs, California, USA in February 1998. As the record of the first large-scale meeting entirely devoted to quantum computing and communications, this book is a unique survey of the state-of-the-art in the area. The 43 carefully reviewed papers are organized in topical sections on entanglement and quantum algorithms, quantum cryptography, quantum copying and quantum information theory, quantum error correction and fault-tolerant quantum computing, and embodiments of quantum computers.