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Título: | Operating Coupled VO₂-Based Oscillators for Solving Ising Models |
Autor: | Avedillo, María J. CSIC ORCID; Jiménez Través, Manuel CSIC ORCID ; Delacour, Corentin; Todri-Sanial, Aída; Linares-Barranco, Bernabé CSIC ORCID; Núñez, Juan CSIC ORCID | Palabras clave: | Phase Transition Devices VO2 Coupled oscillators Oscillation based computing Phase locking Ising machine Combinatorial optimization |
Fecha de publicación: | 31-oct-2023 | Editor: | Institute of Electrical and Electronics Engineers | Citación: | IEEE Journal on Emerging and Selected Topics in Circuits and Systems 13(4): 901-913 (2023) | Resumen: | Coupled nano-oscillators are attracting increasing interest because of their potential to perform computation efficiently, enabling new applications in computing and information processing. The potential of phase transition devices for such dynamical systems has recently been recognized. This paper investigates the implementation of coupled VO2-based oscillator networks to solve combinatorial optimization problems. The target problem is mapped to an Ising model, which is solved by the synchronization dynamics of the system. Different factors that impact the probability of the system reaching the ground state of the Ising Hamiltonian and, therefore, the optimum solution to the corresponding optimization problem, are analyzed. The simulation-based analysis has led to the proposal of a novel Second-Harmonic Injection Locking (SHIL) schedule. Its main feature is that SHIL signal amplitude is repeatedly smoothly increased and decreased. Reducing SHIL strength is the mechanism that enables escaping from local minimum energy states. Our experiments show better results in terms of success probability than previously reported approaches. An experimental Oscillatory Ising Machine (OIM) has been built to validate our proposal. | Versión del editor: | https://doi.org/10.1109/JETCAS.2023.3328887 | URI: | http://hdl.handle.net/10261/342083 | DOI: | 10.1109/JETCAS.2023.3328887 | ISSN: | 2156-3357 | E-ISSN: | 2156-3365 |
Aparece en las colecciones: | (IMSE-CNM) Artículos |
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Solving-Ising-Models-preprint.pdf | 1,68 MB | Adobe PDF | Visualizar/Abrir |
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