What's New

What is the Simulated Bifurcation Machine?

Originated from research on quantum bifurcation machines,
the SBM is a practical and ready-to-use ISING machine that solves large-scale "combinatorial optimization problems" at high speed.

※Simulated Bifurcation Machine=SBM


No need for special hardware; can be implemented on general-purpose computers.


Solved the 1 million spin MAX-CUT problem in a PC cluster environment.
Horizontal scaling can be achieved by using tens of computers as a resource.


100 times faster than a simulated annealing method*2, now widely used to solve a Ising problem.

*1:Spin:unit of Ising problem size.
*2:Based on our environment.

Comparison with the existing Ising machines

Achieved the scale required to solve real-world problems.

Applicable Domains

SBM Introduction Video

Try our SQBM+ Cloud Service in Azure Quantum

SQBM+ Cloud on Azure Quantum

Plan Price Per Month
Price according to computing time (billed in units of seconds)
Learn & Development
Limited to use for learning and development; maximum of 1 hour

0 to 0.1 hour - Free

0.1 to 1 hour - $200 per hour

Performance  at  scale

0 to 5 hours - $1,800 per hour

5 to 25 hours  - $1,600 per hour

25 to 50 hours - $1,400 per hour

50 hours or more  - $1,000 per hour


"Microsoft" and "Azure" are registered trademarks or trademarks of Microsoft Corporation in the United States and other countries.

Try our "proof-of-concept" (PoC) edition of SBM
at the AWS Marketplace

PoC edition

  • Solves ISING, Max-CUT, and Max-SAT optimization problems.
  • Solves ISING problems with up to 10,000 spins.
  • Available for no additional charge*; you are only charged for the use of AWS virtual machines (AWS virtual machine instances). You are not charged for the use of SBM.

    * Requires agreement for using AWS virtual machines (AWS virtual machine instances).

On extending the trial period of the PoC edition of SBM and releasing the new version 1.2 (Nov. 29, 2019)

We sincerely thank you for providing us with your constructive feedback regarding the PoC edition of SBM.
We are pleased to announce the release of the new version; this new version allows setting some of the highly requested parameters.
The Poc edition of SBM remains free at no additional charge; you are only charged for the use of AWS virtual machines (AWS virtual machine instances).
Thank you for your continued support of SBM.

Amazon Web Services Inc., AWS, and AWS Marketplace are trademarks of Amazon.com, Inc. or its affiliates in the United States and/or other countries.