Hybrid Quantum-Classical Network Modeling With Petri Net Interchangeability

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Solution Overview

Problem

Existing hybrid quantum-classical computing networks are difficult to scale, build, and modify efficiently, especially in complex and heterogeneous environments, leading to high resource consumption and inefficiencies.

Innovation Solution

A network building method that includes an intermediate Petri net transformation step with specific types of Petri places and transitions, enabling a simple, powerful, and reusable approach for constructing scalable hybrid quantum-classical computing systems, allowing integration of various quantum and classical technologies and supporting asynchronous or synchronous workflows.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a complex hybrid quantum-classical computing network is built to handle heterogeneous technologies and large scale operations, then the network performance and capability are improved, but the building time, resource consumption, and cost increase significantly

Engineering Contradiction:
Improvenetwork capabilityVSAvoidbuilding time
Core Design Contradiction:
Adaptability or versatilityVSLoss of time

Solution Approach 1:

The network building method is segmented into distinct transformation stages: application decomposition into services, service mapping to building blocks, and Petri net model generation. This segmentation allows each stage to be handled independently and systematically, reducing overall complexity and building time while maintaining network capability.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The invention performs preliminary actions by pre-defining building blocks with specific input/output ports and data types, and by establishing a standardized Petri net model structure beforehand. This preliminary preparation enables rapid network construction without requiring complex on-the-fly decisions, significantly reducing building time while preserving adaptability.

Inventive Principle:
Principle #10Preliminary action

2Adaptability or versatility

If a complex hybrid quantum-classical computing network is built to support heterogeneous technologies, then the network versatility is improved, but the ease of manufacture and implementation deteriorates

Engineering Contradiction:
Improvetechnology integrationVSAvoidimplementation ease
Core Design Contradiction:
Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The Petri net model serves as a universal intermediate representation that can represent different quantum and classical technologies through standardized places, transitions, and arcs. This universal model enables heterogeneous technology integration while maintaining ease of implementation through a consistent modeling approach across all technology types.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The Petri net model acts as an intermediary between the application layer and the physical quantum-classical hardware layer. This intermediary abstraction simplifies implementation by providing a standardized intermediate representation that mediates between diverse technologies, making the overall process easier to manufacture and deploy.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Productivity

If a large-scale hybrid quantum-classical computing network is built with many calculation nodes, then the network performance is improved, but the resource consumption and cost increase

Engineering Contradiction:
Improvenetwork performanceVSAvoidresource consumption
Core Design Contradiction:
ProductivityVSQuantity of substance

Solution Approach 1:

The network construction process is segmented into reusable stages and standardized building blocks, allowing efficient resource utilization when scaling to many calculation nodes. Each node can be independently modeled and integrated, reducing per-node resource consumption while maintaining overall network performance.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentEP4152221B1Method of building a hybrid quantum-classical computing network
Publication Date: 2026.01.28 BULL SA
  • EP4152221B1 patent drawingFigure 1~5
  • EP4152221B1 patent drawingFigure 6~11
  • EP4152221B1 patent drawingFigure 12~14

AI summary

This invention relates to a method of building a hybrid quantum-classical computing network, comprising: a first step of transformation of an application composed of services into a Petri net including both Petri places (8, 9) and Petri transitions (81, 82, 91-94) between said Petri places (8, 9), any said Petri place (8, 9) corresponding to: either a first type building block corresponding to any quantum processing unit (8) which processes a job into a result, or a second type building block corresponding to any plugin unit (9), which converts a job into another job and/or a result into another result, any Petri transition (81, 82, 91-94) corresponding to any link between two building blocks (8, 9), all said links (81, 82, 91-94) being formatted so as to make any building block (8, 9) interchangeable, a second step of transformation of said Petri net into a hybrid quantum-classical computing network, replacing any building block by its corresponding unit (8, 9), interconnecting all said corresponding units (8, 9) together by replacing any Petri transition (81, 82, 91-94) by a connection simply transmitting without processing nor converting.