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SRM Institute of Science and Technology

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Representative Papers

Continuous Quantum Feedback Control via Kraus-Parameterized Belief Reinforcement Learning

Aug 16, 2026

This study addresses the challenge of feedback control under noisy continuous measurements where quantum states are not directly accessible. We propose a Kraus-parameterized belief reinforcement learning method that integrates quantum state geometry into the learning loop. By imposing Stiefel manifold constraints on the encoder, the approach generates physically valid and interpretable density matrix estimates, while employing the PPO algorithm to achieve continuous control mapping. Experimental results demonstrate that this method attains a belief fidelity of 0.77–0.80 with significantly lower return variance compared to LSTM baselines. Consequently, it enables more stable quantum feedback control under non-ideal conditions, effectively resolving the lack of physical constraints in belief representations inherent to traditional approaches.

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Latest Papers

Continuous Quantum Feedback Control via Kraus-Parameterized Belief Reinforcement Learning

Aug 16, 2026

This study addresses the challenge of feedback control under noisy continuous measurements where quantum states are not directly accessible. We propose a Kraus-parameterized belief reinforcement learning method that integrates quantum state geometry into the learning loop. By imposing Stiefel manifold constraints on the encoder, the approach generates physically valid and interpretable density matrix estimates, while employing the PPO algorithm to achieve continuous control mapping. Experimental results demonstrate that this method attains a belief fidelity of 0.77–0.80 with significantly lower return variance compared to LSTM baselines. Consequently, it enables more stable quantum feedback control under non-ideal conditions, effectively resolving the lack of physical constraints in belief representations inherent to traditional approaches.

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