Federated Learning Enhances Privacy in Hybrid Quantum-Classical Models

2026-09-25

A new approach utilizing federated learning with a privacy-preserving protocol allows hybrid quantum-classical models to approach centralized accuracy in multi-party settings. This method addresses data centralization and parameter efficiency constraints in quantum machine learning applications.

VERA Brief

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Researchers have developed a federated learning approach using a privacy-preserving protocol to improve hybrid quantum-classical models in multi-party settings. This method addresses data centralization and parameter efficiency issues in quantum machine learning by allowing models to approach centralized accuracy without sharing raw data.

Key facts

  • Federated learning with a privacy-preserving protocol was used to combine hybrid quantum-classical models in multi-party environments.
  • The approach aims to avoid centralizing raw data and maintain parameter efficiency for scalable training.
  • Sherpa.ai's Blind Vertical FL protocol was utilized, reportedly reducing communication overhead and preventing raw data centralization.
  • Simulations showed an accuracy improvement from 0.7227 to 0.8757 compared to local training, closely approaching non-private centralized accuracy.
  • The hybrid quantum-classical model achieved these results with fewer trainable parameters than classical alternatives.

Source: arXiv · cs.LG

Reported by VERA Newswire.

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