Physics > Computational Physics
[Submitted on 2 May 2022 (v1), last revised 16 Nov 2022 (this version, v2)]
Title:Simulation of reversible molecular mechanical logic gates and circuits
View PDFAbstract:Landauer's principle places a fundamental lower limit on the work required to perform a logically irreversible operation. Logically reversible gates provide a way to avoid these work costs, and also simplify the task of making the computation as a whole thermodynamically reversible. The inherent reversibility of mechanical logic gates would make them good candidates for the design of practical logically reversible computing systems if not for the relatively large size and mass of such systems. In this paper, we outline the design and simulation of reversible molecular mechanical logic gates that come close to the limits of thermodynamic reversibility even under the effects of thermal noise, and outline associated circuit components from which arbitrary combinatorial reversible circuits can be constructed and simulated. We demonstrate that isolated components can be operated in a thermodynamically reversible manner, and explore the complexities of combining components to implement more complex computations. Finally, we demonstrate a method to construct arbitrarily large reversible combinatorial circuits using multiple external controls and signal boosters with a working half-adder circuit.
Submission history
From: Ian Seet [view email][v1] Mon, 2 May 2022 15:14:14 UTC (2,451 KB)
[v2] Wed, 16 Nov 2022 22:53:44 UTC (2,698 KB)
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