Operating Coupled VO₂-Based Oscillators for Solving Ising Models

IF 3.7 2区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Journal on Emerging and Selected Topics in Circuits and Systems Pub Date : 2023-10-31 DOI:10.1109/JETCAS.2023.3328887

Maria J. Avedillo;Manuel Jiménez Través;Corentin Delacour;Aida Todri-Sanial;Bernabé Linares-Barranco;Juan Núñez

{"title":"Operating Coupled VO₂-Based Oscillators for Solving Ising Models","authors":"Maria J. Avedillo;Manuel Jiménez Través;Corentin Delacour;Aida Todri-Sanial;Bernabé Linares-Barranco;Juan Núñez","doi":"10.1109/JETCAS.2023.3328887","DOIUrl":null,"url":null,"abstract":"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.","PeriodicalId":48827,"journal":{"name":"IEEE Journal on Emerging and Selected Topics in Circuits and Systems","volume":"13 4","pages":"901-913"},"PeriodicalIF":3.7000,"publicationDate":"2023-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Journal on Emerging and Selected Topics in Circuits and Systems","FirstCategoryId":"5","ListUrlMain":"https://ieeexplore.ieee.org/document/10302292/","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}

引用次数: 0

Abstract

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.

查看原文本刊更多论文

基于 VO₂的操作耦合振荡器用于求解等效模型

由于耦合纳米振荡器具有高效计算的潜力，可在计算和信息处理领域实现新的应用，因此正吸引着越来越多的关注。相变器件在此类动态系统中的潜力最近已得到认可。本文研究了如何利用基于 VO2 的耦合振荡器网络来解决组合优化问题。目标问题被映射到一个伊辛模型，通过系统的同步动力学来解决。分析了影响系统达到伊辛哈密顿的基态概率的不同因素，从而分析了相应优化问题的最优解。通过模拟分析，提出了一种新颖的二次谐波注入锁定（SHIL）计划。它的主要特点是 SHIL 信号幅度反复平滑地增加和减少。降低 SHIL 强度是摆脱局部最小能量状态的机制。我们的实验结果表明，与之前报道的方法相比，我们的成功概率更高。为了验证我们的建议，我们建立了一个实验性的振荡伊辛机（OIM）。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

IEEE Journal on Emerging and Selected Topics in Circuits and Systems ENGINEERING, ELECTRICAL & ELECTRONIC-

CiteScore

8.50

自引率

2.20%

发文量

期刊介绍： The IEEE Journal on Emerging and Selected Topics in Circuits and Systems is published quarterly and solicits, with particular emphasis on emerging areas, special issues on topics that cover the entire scope of the IEEE Circuits and Systems (CAS) Society, namely the theory, analysis, design, tools, and implementation of circuits and systems, spanning their theoretical foundations, applications, and architectures for signal and information processing.