arXiv Machine Learning By Priyanshi Singh, Krishna Bhatia

Continuous Quantum Feedback Control via Kraus-Parameterized Belief Reinforcement Learning

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arXiv:2608. 15715v1 Announce Type: cross Abstract: Quantum feedback control requires acting on noisy continuous measurement records without direct access to the underlying quantum state.

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arXiv AI
Jul 22

Robust Belief-State Policy Learning for Quantum Network Routing Under Decoherence and Time-Varying Conditions

arXiv:2509. 08654v2 Announce Type: replace-cross Abstract: Quantum network routing requires online decisions under probabilistic entanglement generation, finite quantum memories, decoherence, imperfect operations, and classical feedback, while the controller has incomplete knowledge of the physical state.

By Amirhossein Taherpour, Abbas Taherpour, Tamer Khattab, Mazen Hasna
arXiv Machine Learning
Aug 31

Quantum Federated Learning Based on Bures--Uhlmann Geometry for Heterogeneous Noisy Clients

The paper proposes a quantum federated learning framework that extends parameter-space geometry to mixed states, using the Bures metric as a local preconditioner and the mean Uhlmann curvature to create an aggregation rule that down‑weights unreliable clients. It provides theoretical convergence guarantees and demonstrates through trapped‑ion quantum emulator experiments that the method retains high accuracy under device heterogeneity and outperforms standard federated averaging, which suffers under strong noise.

By Haruki Emori, Masaki Uchihara, Yuuki Tokunaga
arXiv Machine Learning
Sep 16

Towards Surrogate Based Dequantization of Quantum Reinforcement Learning

The paper investigates whether quantum reinforcement learning algorithms can be matched by efficient classical methods. It focuses on a simplified reinforcement learning setting with a uniform generative model, providing finite‑sample guarantees for classical kernelized Fitted Q‑Iteration that uses kernels aligned with parameterized quantum circuits. The authors identify sufficient conditions on data encoding, kernel choice, and problem structure under which this classical approach dequantizes quantum Q‑learning, and suggest using kernelized Fitted Q‑Iteration as a heuristic when those conditions cannot be verified.

By Pablo Rodriguez-Grasa, Sofiene Jerbi, Mikel Sanz, Ryan Sweke