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Gigahertz Sub-Landauer Momentum Computing

Authors :
Ray, Kyle J.
Crutchfield, James P.
Publication Year :
2022

Abstract

We introduce a fast and highly-efficient physically-realizable bit swap. Employing readily available and scalable Josephson junction microtechnology, the design implements the recently introduced paradigm of momentum computing. Its nanosecond speeds and sub-Landauer thermodynamic efficiency arise from dynamically storing memory in momentum degrees of freedom. As such, during the swap, the microstate distribution is never near equilibrium and the memory-state dynamics fall far outside of stochastic thermodynamics that assumes detailed-balanced Markovian dynamics. The device implements a bit-swap operation -- a fundamental operation necessary to build reversible universal computing. Extensive, physically-calibrated simulations demonstrate that device performance is robust and that momentum computing can support thermodynamically-efficient, high-speed, large-scale general-purpose computing that circumvents Landauer's bound.<br />Comment: 18 pages, 11 figures, 5 appendices; http://csc.ucdavis.edu/~cmg/compmech/pubs/gslmc.htm

Details

Database :
arXiv
Publication Type :
Report
Accession number :
edsarx.2202.07122
Document Type :
Working Paper