Quantum Communication Channel Routing With Synchronized Entanglement Paths

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Solution Overview

Problem

Efficiently establishing quantum communication channels in quantum networks is challenging due to the no-cloning theorem, decoherence, and the need for timely entanglement swapping, which existing centralized routing protocols often fail to address, leading to increased waiting times and decoherence of qubits.

Innovation Solution

A decentralized entanglement routing mechanism that generates and exploits multiple paths to maximize simultaneous quantum-user pairs and throughput by synchronizing quantum devices via bounded channels and entangled qubits, using classical techniques for path discovery and resource management.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If centralized routing protocols are used to establish quantum communication channels, then path selection and resource management can be coordinated, but waiting times increase and qubit decoherence occurs

Engineering Contradiction:

Improvequantum communication reliabilityVSAvoidqubit waiting time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent segments the quantum network into autonomous quantum devices that independently manage their own entanglement routing. Each device maintains local quantum states and makes decentralized routing decisions based on current network conditions, eliminating the need for centralized coordination that causes delays. This segmentation allows parallel entanglement establishment across multiple paths simultaneously.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent implements dynamic routing where quantum devices continuously adapt their entanglement paths based on real-time network conditions, fidelity measurements, and available quantum resources. The routing decisions are made on-demand rather than through predetermined centralized plans, allowing the system to respond dynamically to changing conditions and minimize qubit waiting time.

Inventive Principle:

Principle #15Dynamics

2Productivity

If multiple quantum paths are established simultaneously, then throughput and scalability improve, but resource collisions and decoherence increase

Engineering Contradiction:

Improvequantum throughputVSAvoidquantum fidelity

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent performs preliminary fidelity estimation and path validation before establishing entanglement on multiple quantum paths. Quantum devices assess the quality of available channels and select paths with sufficient fidelity thresholds in advance, preventing resource collisions and ensuring reliable quantum communication from the outset.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent implements feedback mechanisms where quantum devices continuously monitor the fidelity of established entanglement paths and report status to neighboring devices. This feedback allows the system to detect and respond to decoherence or resource conflicts, adjusting routing decisions to maintain high fidelity while supporting multiple simultaneous paths.

Inventive Principle:

Principle #23Feedback

3Speed

If entanglement swapping is performed rapidly, then communication speed increases, but decoherence and fidelity loss worsen

Engineering Contradiction:

Improvequantum communication speedVSAvoidqubit fidelity

Core Design Contradiction:

SpeedVSReliability

Solution Approach 1:

The patent applies beforehand cushioning by establishing entanglement paths with sufficient fidelity margins and incorporating error correction capabilities before rapid communication begins. Quantum devices prepare robust entanglement channels that can withstand rapid operations, cushioning against decoherence effects that would otherwise occur during high-speed entanglement swapping.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Ensures timely and reliable quantum communication by avoiding resource collisions and decoherence, improving scalability and reducing dependency on network topology, while maintaining high fidelity of quantum information transfer.

Implementation Method 1

providing at least two quantum links by entangling at least one qubit of each of the respective two quantum devices connected by the at least two quantum bounded channels

Methodology Applied

Scientific EffectQuantum entanglement:

Data Source

PatentUS20260051959A1Method, control program, computer-readable data carrier, control unit, quantum device, quantum network, apparatus, and quantum computing arrangement for establishing a quantum communication channel

Publication Date: 2026.02.19 AIRBUS (SAS)

AI summary

A method, control program, computer-readable data carrier, control unit quantum device, quantum network, apparatus, such as a satellite, an aircraft and/or a communication station, and/or quantum computing arrangement for establishing a quantum communication channel to transmit quantum data units between a source quantum device and a destination quantum device. The method includes requesting a quantum path between a first quantum device and a second quantum device; establishing at least two quantum bounded channels between respective two quantum devices each designated for enabling the quantum path; providing at least two quantum links by entangling at least one qubit of each of the respective two quantum devices connected by the at least two quantum bounded channels; and synchronizing the quantum devices providing the at least two quantum bounded channels in time to provide the quantum path via the at least two quantum links simultaneously for establishing the quantum communication channel.