Neural-network-encoded variational quantum algorithms

Miao, Jiaqi; Hsieh, Chang-Yu; Zhang, Shi-Xin

doi:10.1103/physrevapplied.21.014053

Phys. Rev. Applied

2024

DOI: 10.1103/physrevapplied.21.014053

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Neural-network-encoded variational quantum algorithms

Jiaqi Miao,

Chang-Yu Hsieh,

Shi-Xin Zhang

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Cited by 3 publications

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A quantum entanglement-based algorithm for discriminating non-orthogonal qubits

Zidan,

El-Qersh,

Abdel-Aty

et al. 2025

Alexandria Engineering Journal

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A quantum entanglement-based algorithm for discriminating non-orthogonal qubits

Zidan,

El-Qersh,

Abdel-Aty

et al. 2025

Alexandria Engineering Journal

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Variational post-selection for ground states and thermal states simulation

Zhang,

Miao,

Hsieh

2024

Quantum Sci. Technol.

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Variational quantum algorithms (VQAs), as one of the most promising routes in the noisy intermediate-scale quantum (NISQ) era, offer various potential applications while also confront severe challenges due to near-term quantum hardware restrictions. In this work, we propose a framework to enhance the expressiveness of variational quantum ansatz by incorporating variational post-selection techniques. These techniques apply variational modules and neural network post-processing on ancilla qubits, which are compatible with the current generation of quantum devices. Equipped with variational post-selection, we demonstrate that the accuracy of the variational ground state and thermal state preparation for both quantum spin and molecule systems is substantially improved. Notably, in the case of estimating the local properties of a thermalized quantum system, we present a scalable approach that outperforms previous methods through the combination of neural post-selection and a new optimization objective.

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Universal imaginary-time critical dynamics on a quantum computer

Zhang,

Yin

2024

Phys. Rev. B

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Neural-network-encoded variational quantum algorithms

Cited by 3 publications

References 53 publications

A quantum entanglement-based algorithm for discriminating non-orthogonal qubits

A quantum entanglement-based algorithm for discriminating non-orthogonal qubits

Variational post-selection for ground states and thermal states simulation

Universal imaginary-time critical dynamics on a quantum computer

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