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Modulational Instability and Dynamical Growth Blockade in the Nonlinear Hatano–Nelson Model

open access: yesAdvanced Physics Research, EarlyView.
The nonlinear Hatano–Nelson model under periodic boundary conditions is investigated, revealing a novel growth blockade phenomenon triggered by the modulational instability of nonlinear plane waves. This effect, characterized by the abrupt halt of norm growth, arises from self‐induced disorder, marking a departure from the convective motion observed in
Stefano Longhi
wiley   +1 more source

Pulse‐Level Quantum Robust Control with Diffusion‐Based Reinforcement Learning

open access: yesAdvanced Physics Research, EarlyView.
This paper proposes a diffusion‐based reinforcement learning method for pulse‐level quantum robust control (PQC‐DBRL) to enhance the robustness of pulse‐level quantum gate control. When evaluated across different Hamiltonian variations, PQC‐DBRL shows a smaller fidelity variance compared to GRAPE, indicating higher robustness against system parameter ...
Yuanjing Zhang   +3 more
wiley   +1 more source

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