Journal ArticleDOI
Energy-Efficient Superconducting Computing—Power Budgets and Requirements
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TLDR
Large-scale computing system characteristics vary by application class, but power and energy use has become a major problem for all classes and superconducting computing may be able to serve the needs of these systems significantly better than conventional technology.Abstract:
Large-scale computing system characteristics vary by application class, but power and energy use has become a major problem for all classes. Superconducting computing may be able to serve the needs of these systems significantly better than conventional technology. Recent developments in single flux quantum circuit technology for digital logic include variants with greatly improved energy efficiency. Concepts were investigated for computing systems capable of performance in the range from 1 to 1000 PFLOP/s. The concept systems were constrained to use existing commercial cryogenic refrigerators and Nb superconducting technology. In order to meet the performance goals, cache and main memory capable of operating at cryogenic temperatures will be required. Superconducting computing is shown to be potentially competitive on the basis of power and energy efficiency if key component technologies can meet specific goals. Potential advantages of superconducting computing are identified as well as areas requiring further development.read more
Citations
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Ultrafast nonthermal photo-magnetic recording in a transparent medium
TL;DR: This work describes ultrafast all-optical photo-magnetic recording in transparent films of the dielectric cobalt-substituted garnet, which outperforms existing alternatives in terms of the speed of the write–read magnetic recording event and the unprecedentedly low heat load.
Journal ArticleDOI
Hybrid superconducting-magnetic memory device using competing order parameters.
TL;DR: A reconfigurable two-layer magnetic spin valve integrated within a Josephson junction is described, demonstrating non-volatile, size-independent switching of Josephson coupling, in magnitude as well as phase, and they may enable practical nanoscale superconducting memory devices.
Journal ArticleDOI
Controllable 0–π Josephson junctions containing a ferromagnetic spin valve
Eric C. Gingrich,Bethany Niedzielski,Joseph A. Glick,Yixing Wang,Yixing Wang,Donald L. Miller,Reza Loloee,William P. Pratt,Norman O. Birge +8 more
TL;DR: The phase state of a Josephson junction containing two ferromagnetic layers can be toggled between 0 and π by changing the relative orientation of the two magnetizations as mentioned in this paper. But the phase state is invariant to the thickness of the material.
Journal ArticleDOI
Fast electronic resistance switching involving hidden charge density wave states.
Igor Vaskivskyi,I. A. Mihailovic,I. A. Mihailovic,Serguei Brazovskii,Jan Gospodaric,Tomaz Mertelj,Damjan Svetin,Petra Sutar,Dragan Mihailovic,Dragan Mihailovic +9 more
TL;DR: In this article, the authors used pulsed currents to induce fast switching between Mott insulator and metallic states in the charge density wave system 1T-TaS2, presenting an all-electronic storage mechanism.
Journal ArticleDOI
Ultralow power artificial synapses using nanotextured magnetic Josephson junctions.
Michael L. Schneider,Christine A. Donnelly,Stephen E. Russek,Burm Baek,Matthew R. Pufall,Peter F. Hopkins,Paul D. Dresselhaus,Samuel P. Benz,William H. Rippard +8 more
TL;DR: A new form of artificial synapse based on dynamically reconfigurable superconducting Josephson junctions with magnetic nanoclusters in the barrier is demonstrated, which provides a significant step toward a neuromorphic platform that is faster, more energy-efficient, and thus can attain far greater complexity than has been demonstrated with other technologies.
References
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Journal ArticleDOI
Design of ion-implanted MOSFET's with very small physical dimensions
TL;DR: This paper considers the design, fabrication, and characterization of very small Mosfet switching devices suitable for digital integrated circuits, using dimensions of the order of 1 /spl mu/.
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RSFQ logic/memory family: a new Josephson-junction technology for sub-terahertz-clock-frequency digital systems
TL;DR: In this paper, the rapid single-flux-quantum (RSFQ) circuit family is reviewed and a discussion of possible future developments and applications of this novel, ultrafast digital technology is discussed.
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Worldwide electricity used in data centers
TL;DR: This study estimates historical electricity use by data centers worldwide and regionally on the basis of more detailed data than were available for previous assessments, including electricity used by servers, data center communications, and storage equipment.
Journal ArticleDOI
Energy-Efficient Single Flux Quantum Technology
TL;DR: A novel energy-efficient single flux quantum logic family, ERSFQ/eSFQ, is presented and different superconductor digital technology approaches and logic families addressing this problem are compared.