Noise-aided Logic in an Electronic Analog of Synthetic Genetic Networks

TL;DR

This paper experimentally demonstrates that moderate noise can enhance logic operations in an electronic analog of synthetic genetic networks, showcasing Logical Stochastic Resonance and flexible logic gate functionality.

Contribution

It provides the first experimental verification of noise-enhanced logic behavior in an electronic synthetic genetic network analog, confirming theoretical predictions.

Findings

Good agreement between circuit measurements and numerical predictions

Robust logic operations occur within an optimal noise window

System can switch between AND/NAND and OR/NOR logic modes

Abstract

We report the experimental verification of noise-enhanced logic behaviour in an electronic analog of a synthetic genetic network, composed of two repressors and two constitutive promoters. We observe good agreement between circuit measurements and numerical prediction, with the circuit allowing for robust logic operations in an optimal window of noise. Namely, the input-output characteristics of a logic gate is reproduced faithfully under moderate noise, which is a manifestation of the phenomenon known as Logical Stochastic Resonance. The two dynamical variables in the system yield complementary logic behaviour simultaneously. The system is easily morphed from AND/NAND to OR/NOR logic.