Title	Date of Issue
Machine Learning-assisted High-speed Combinatorial Optimization with Ising Machines for Dynamically Changing Problems Yohei Hamakawa, Tomoya Kashimata, Masaya Yamasaki, Kosuke Tatsumura, arXiv:2503.23966 (2025) https://doi.org/10.48550/arXiv.2503.23966	1 April,2025
Enhancing In-vehicle Multiple Object Tracking Systems with Embeddable Ising Machines Kosuke Tatsumura, Yohei Hamakawa, Masaya Yamasaki, Koji Oya, Hiroshi Fujimoto, arXiv:2410.14093 (2024) https://doi.org/10.48550/arXiv.2410.14093	21 Oct,2024
Collaborative filtering based on nonnegative/binary matrix factorization Y. Terui, Y. Inoue, Y. Hamakawa, K. Tatsumura, K. Kudo, arXiv:2410.10381 (2024) https://doi.org/10.48550/arXiv.2410.10381	14 Oct,2024
QUBO Problem Formulation of Fragment-Based Protein–Ligand Flexible Docking. K. Yanagisawa, T. Fujie, K. Takabatake, and Y. Akiyama, Entropy, 26, 397 (2024). https://doi.org/10.3390/e26050397	30 April, 2024
H. Obata, T. Nabetani, H. Goto, and K. Tatsumura, “Ultra-High-Speed Optimization for 5G Wireless Resource Allocation by Simulated Bifurcation Machine,” Proc. of IEEE Wireless Communications and Networking Conference (WCNC), 2024. https://doi.org/10.1109/WCNC57260.2024.10571166	21-24 April,2024
Efficient and Scalable Architecture for Multiple-chip Implementation of Simulated Bifurcation Machines T. Kashimata, M. Yamasaki, R. Hidaka, and K. Tatsumura, IEEE Access, 12, pp. 36606-36621 (2024); arXiv: 2311.17370 (2023) https://doi.org/10.1109/ACCESS.2024.3374089 https://doi.org/10.48550/arXiv.2311.17370	5 Mar, 2024 29 Nov,2023
Correlation-diversified portfolio construction by finding maximum independent set in large-scale market graph R. Hidaka, Y. Hamakawa, J. Nakayama, and K. Tatsumura, IEEE Access 11, pp. 142979 - 142991 (2023); arXiv: 2308.04769 (2023) https://doi.org/10.1109/ACCESS.2023.3341422 https://doi.org/10.48550/arXiv.2308.04769	12 Dec, 2023 12 July,2023
Pairs-trading System using Quantum-inspired Combinatorial Optimization Accelerator for Optimal Path Search in Market Graphs K. Tatsumura, R. Hidaka, J. Nakayama, T. Kashimata, and M. Yamasaki, IEEE Access 11, pp. 104406 - 104416 (2023); arXiv: 2307.05923 (2023) https://doi.org/10.1109/ACCESS.2023.3316727　　 https://doi.org/10.48550/arXiv.2307.05923	18 Sep,2023 12 July,2023
Real-time Trading System based on Selections of Potentially Profitable, Uncorrelated, and Balanced Stocks by NP-hard Combinatorial Optimization K. Tatsumura, R. Hidaka, J. Nakayama, T. Kashimata, and M. Yamasaki (2023), IEEE Access 11, pp. 120023 - 120033 (2023); arXiv: 2307.06339 https://doi.org/10.1109/ACCESS.2023.3326816 https://doi.org/10.48550/arXiv.2307.06339	23 Oct,2023 12 July, 2023
G. Finocchio, K. Tatsumura, Hayato Goto et al., "Roadmap for Unconventional Computing with Nanotechnology," Nano Futures 8, 012001 (2024); arXiv: 2301.06727 (2023) DOI: https://doi.org/10.1088/2399-1984/ad299a DOI: https://doi.org/10.48550/arXiv.2301.06727	28 March,2024 17 Jan,2023
Simulated bifurcation for higher-order cost functions Taro Kanao, Hayato Goto, Applied Physics Express 16, 014501 (2023); arXiv: 2211.09296.　 DOI: https://doi.org/10.35848/1882-0786/acaba9　 DOI: https://doi.org/10.48550/arXiv.2211.09296	30 Dec, 2022　 17 Nov, 2022
Simulated bifurcation assisted by thermal fluctuation Taro Kanao, Hayato Goto, Communications Physics 5, Article number: 153 (2022)	14 June,2022
N. Matsumoto, Y. Hamakawa, K. Tatsumura, K. Kudo, Distance-based clustering using a QUBO formulations, Scientific Reports 12, 2669 (2022).	17 Feb, 2022
"Large-scale combinatorial optimization in real-time systems by FPGA-based accelerators for simulated bifurcation" K. Tatsumura, Int'l Symp. on Highly Efficient Accelerators and Reconfigurable Technologies (HEART), 2021. Also see THE Slides (PDF)(5.75MB) Also see THE Video	21 June,2021
"Scaling-out Ising machine using a multi-chip architecture for simulated bifurcation" K. Tatsumura, M. Yamasaki, H. Goto, Nature Electronics 4, 208–217(2021). Also see BEHIND THE PAPER	01 Mar, 2021
"High-performance combinatorial optimization based on classical mechanics" H. Goto et al., Science Advances Vol. 7, no. 6, eabe7953 (2021)	03 Feb, 2021
"A Currency Arbitrage Machine Based on the Simulated Bifurcation Algorithm for Ultrafast Detection of Optimal Opportunity," IEEE International Symposium on Circuits and Systems (ISCAS), pp. 1-5 (2020).	28 Sep, 2020
"Live Demonstration: Capturing Short-Lived Currency Arbitrage Opportunities with a Simulated Bifurcation Algorithm-Based Trading System," IEEE International Symposium on Circuits and Systems (ISCAS), pp. 1-1 (2020).	28 Sep, 2020
FPGA-Based Simulated Bifurcation Machine K. Tatsumura, A. R. Dixon, and H. Goto, Proc. of Int'l Conf. on Field Programmable Logic and Applications (FPL), 59-66 (2019).	9 Sep, 2019
"Combinatorial optimization by simulating adiabatic bifurcations in nonlinear Hamiltonian systems" Science Advances 19 Apr. 2019, Vol. 5, no. 4, eaav2372	19 Apr, 2019

Manuals

Title
SQBM+ for AWS
SQBM+ for AWS Release Notes (PDF)(77KB)
User's Manual for SQBM+™ V2 (PDF)(1.6MB)
SQBM+ for Azure
Release Notes for SQBM+ for Azure (PDF)(58KB)
User‘s Manual for SQBM+™ V2 (PDF)(1.46MB)

Links

※ Simulated Bifurcation Machine = SBM

World Economic Forum Quantum Application Hub

The World Economic Forum Quantum Application Hub launched seven applications in September 2024, and SQBM+ has been linked as one of them in the Financial Service category. (World Economic Forum) Click on the image of SQBM+ to go to the overview page.
https://initiatives.weforum.org/quantum/application-hub (weforum.org)

IEEE International Workshop on Ising Machines, 2024

(invited) K. Tatsumura, “Enabling NP-hard optimization-based judgement in real-time systems by quantum-inspired technology, ” IEEE International Workshop on Ising Machines, 2024,

https://www.petaspin.com/isingmachines2024/　 [presentation slide] (PDF)(4.98MB)

2023 Symposium on VLSI Technology and Circuits

(invited) K. Tatsumura, “Simulated bifurcation machines: combinatorial optimization accelerators based on a quantum-inspired parallelizable algorithm,” Symposium on VLSI Technology and Circuits, 2023.

https://archive.vlsisymposium.org/23web/forum.html　 [presentation slide] (PDF)(3.75MB)

SQBM+ was featured on Microsoft Azure Quantum Blog

Toshiba launches new SQBM+ quantum-inspired optimization provider on Azure Quantum (27 June.2022)
Toshiba joins Azure Quantum,providing ising machine to solve large combinatorial optimaization problems (22 September,2020)

SBM Blog at Medium
Solving Traveling Salesman Problem with SBM (Simulated Bifurcation Machine)
Benchmarking the MAX-CUT problem on the Simulated Bifurcation Machine

SBM Community on Twitter
https://twitter.com/SimulatedBifur2