Quantum phase slips and voltage fluctuations in superconducting nanowires
نویسندگان
چکیده
منابع مشابه
Quantum phase slips in superconducting nanowires.
We have measured the resistance vs temperature of more than 20 superconducting nanowires with nominal widths ranging from 10 to 22 nm and lengths from 100 nm to 1 microm. With decreasing cross-sectional areas, the wires display increasingly broad resistive transitions. The data are in very good agreement with a model that includes both thermally activated phase slips close to T(c) and quantum p...
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Quantum phase slips (QPS) or the macroscopic quantum tunneling (MQT) of a nanowire’s order parameter through an activation energy barrier have remained the subject of intense debate for many years. They are expected to occur at low enough temperature where thermally activated phase slips (TAPS) have been frozen out in analogy with Josephson junctions where the macroscopic tunneling of phase at ...
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Quantum phase slips in superconducting loops threaded by an external magnetic field provide a coupling between macroscopic quantum states with supercurrents circulating in opposite directions. We analyze the dynamics of the phase slips as a function of the superconducting loop length, from fully coherent dynamics for short loops to dissipative dynamics for the long ones. For intermediate length...
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T. Aref,1,2 A. Levchenko,3 V. Vakaryuk,4 and A. Bezryadin1 1Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA 2Low Temperature Laboratory, Aalto University, 00076 Aalto, Finland 3Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA 4Materials Science Division, Argonne National Laboratory, Argonne, Illinois...
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Quantum phase slippage (QPS) in a superconducting nanowire is a new candidate for developing a quantum bit [Mooij et al. New J. Phys. 2005, 7, 219; Mooij et al. Nat. Phys. 2006, 2, 169; Khlebnikov http://arxiv.org/abs/quant-ph/0210019 2007]. It has also been theoretically predicted that the occurrence of QPS significantly changes the current-phase relationship (CPR) of the wire due to the tunne...
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ژورنال
عنوان ژورنال: Fortschritte der Physik
سال: 2017
ISSN: 0015-8208
DOI: 10.1002/prop.201600043