Deep reinforcement learning for universal quantum state preparation via dynamic pulse control

Abstract

Accurate and efficient preparation of quantum state is a core issue in building a quantum computer. In this paper, we investigate how to prepare a certain single- or two-qubit target state from arbitrary initial states in semiconductor double quantum dots with the aid of deep reinforcement learning. Our method is based on the training of the network over numerous preparing tasks. The results show that once the network is well trained, it works for any initial states in the continuous Hilbert space. Thus repeated training for new preparation tasks is avoided. Our scheme outperforms the traditional optimization approaches based on gradient with both the higher designing efficiency and the preparation quality in discrete control space. Moreover, we find that the control trajectories designed by our scheme are robust against static and dynamic fluctuations, such as charge and nuclear noises.

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• Improving robustness of quantum feedback control with reinforcement learning
• A Quantum States Preparation Method Based on Difference-Driven Reinforcement Learning
• Achieving fast and robust perfect entangling gates via reinforcement learning
• Modularized and Scalable Compilation for Double Quantum Dot Quatum Computing
• Approximate quantum gates compiling with self-navigation algorithm