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quant-ph2026

Quantum Sensing of Non-Repeatable Events Enhanced by In-Sensor Quantum Reservoir Computing

Daiki Sasaki, Hideaki Kawaguchi, Yuichiro Matsuzaki

High-density nitrogen-vacancy (NV) ensembles in diamond enable sensitive magnetometry. Many quantum-sensing protocols rely on reproducible target fields, allowing repeated measurem…

quant-ph2026

QuBridge: Layer-wise Fidelity Decomposition in Quantum Computation Pipeline

Kisho Sotokawa, Hideaki Kawaguchi, Shin Nishio +1

Running a quantum circuit on current hardware involves a sequence of engineering decisions, each with tunable parameters and distinct error characteristics. Existing tools optimize…

quant-ph2026

Digital Annealer-Assisted CNOT Oriented Quantum Circuit Transpilation with Integrated QUBO Mapping and Routing

Kazuma Watanabe, Hideaki Kawaguchi, Shin Nishio +1

Limited qubit counts and two-qubit gate errors motivate reducing CNOT overhead in noisy intermediate-scale quantum (NISQ) transpilation. In circuit-partitioning workflows, repeated…

quant-ph2026

Quantum-Enhanced Processing with Tensor-Network Frontends for Privacy-Aware Federated Medical Diagnosis

Hiroshi Yamauchi, Anders Peter Kragh Dalskov, Hideaki Kawaguchi +1

We propose a privacy-aware hybrid framework for federated medical image classification that combines tensor-network representation learning, MPC-secured aggregation, and post-aggre…

quant-ph2026

Practical Quantum Federated Learning for Privacy-Sensitive Healthcare: Communication Efficiency and Noise Resilience

Suzukaze Kamei, Hideaki Kawaguchi, Takahiko Satoh

AI-driven medical diagnostics increasingly requires collaborative model training across institutions, yet centralizing patient data conflicts with privacy regulations. Federated Le…

quant-ph2026

Telemetry-Based Server Selection in the Quantum Internet via Cross-Layer Runtime Estimation

Masaki Nagai, Hideaki Kawaguchi, Shin Nishio +1

The Quantum Internet will allow clients to delegate quantum workloads to remote servers over heterogeneous networks, but choosing the server that minimizes end-to-end execution tim…