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This European patent grants Quantum B a protocol that uses multipartite quantum entanglement to achieve distributed consensus among network nodes, offering a distinct alternative to classical mechanisms like proof-of-work. By leveraging GHZ states and local measurements, the architecture reduces communication overhead for multi-party synchronization while maintaining security through quantum links. This development advances practical quantum networking infrastructure by enabling efficient coordination across independent nodes without relying on traditional voting algorithms.

Sources coveringQuantum Computing Report, The Verge

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Quantum B Secures European Patent for Quantum Conference Key Agreement Protocol

Quantum Computing ReportSeptember 19, 20261 min read

Quantum B has been granted European Patent EP 4462727 for its Quantum Conference Key Agreement (QCKA) protocol. This protocol utilizes multipartite quantum entanglement to establish distributed consensus across independent network nodes, offering an alternative to classical consensus mechanisms. The technology aims to lower communication overhead for multi-party synchronization and is part of Quantum B's broader portfolio, including its involvement in the EU-funded POSEIDON project. The post Quantum B Secures European Patent for Quantum Conference Key Agreement Protocol appeared first on Quantum Computing Report.

Quantum cryptography and security developer Quantum B, Inc. (formerly Quantum Blockchains) has been granted European Patent EP 4462727 (Application EP23461579) by…

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