Programmable soliton dynamics in all-Josephson-junction logic cells and networks
Vsevolod I Ruzhickiy, Anastasia A Maksimovskaya, Sergey V Bakurskiy, Andrey E Schegolev, Maxim V Tereshonok, Mikhail Yu Kupriyanov, Nikolay V Klenov, Igor I Soloviev
TL;DR
The paper introduces a new design for Josephson junction networks that allows for programmable control of soliton dynamics, enabling robust and flexible logic and computing systems.
Contribution
The novel contribution is a tunable Josephson junction cell design that enables programmable soliton control and unidirectional propagation.
Findings
A structural asymmetry in transmission lines creates a Josephson diode for unidirectional soliton propagation.
Programmable kinetic inductance allows selective activation or deactivation of diode functionality.
Artificial inhomogeneity improves robustness in all-Josephson-junction logic and neuromorphic systems.
Abstract
We demonstrate the programmable control of kinetic soliton dynamics in all-Josephson-junction (all-JJ) networks through a novel tunable cell design. This cell enables on-demand switching of transmission lines and operates across defined parameter regimes supporting diverse dynamical modes. By introducing a structural asymmetry into a transmission line, we implement a Josephson diode that enforces unidirectional soliton propagation. The programmability of the kinetic inductance then provides a crucial mechanism to selectively enable or disable this diode functionality. By engineering artificial inhomogeneity into the circuit architecture, we enhance robustness in all-JJ logic circuits, 2D transmission line all-JJ lattices, and neuromorphic computing systems.
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Taxonomy
TopicsNonlinear Photonic Systems · Neural Networks and Reservoir Computing · Optical Network Technologies