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• W3205672786 endingPage "110301" @default.
• W3205672786 startingPage "110301" @default.
• W3205672786 abstract "Human experts cannot efficiently access physical information of a quantum many-body states by simply “reading” its coefficients, but have to reply on the previous knowledge such as order parameters and quantum measurements. We demonstrate that convolutional neural network (CNN) can learn from coefficients of many-body states or reduced density matrices to estimate the physical parameters of the interacting Hamiltonians, such as coupling strengths and magnetic fields, provided the states as the ground states. We propose QubismNet that consists of two main parts: the Qubism map that visualizes the ground states (or the purified reduced density matrices) as images, and a CNN that maps the images to the target physical parameters. By assuming certain constraints on the training set for the sake of balance, QubismNet exhibits impressive powers of learning and generalization on several quantum spin models. While the training samples are restricted to the states from certain ranges of the parameters, QubismNet can accurately estimate the parameters of the states beyond such training regions. For instance, our results show that QubismNet can estimate the magnetic fields near the critical point by learning from the states away from the critical vicinity. Our work provides a data-driven way to infer the Hamiltonians that give the designed ground states, and therefore would benefit the existing and future generations of quantum technologies such as Hamiltonian-based quantum simulations and state tomography." @default.
• W3205672786 created "2021-10-25" @default.
• W3205672786 creator A5069394341 @default.
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• W3205672786 date "2021-12-01" @default.
• W3205672786 modified "2023-10-03" @default.
• W3205672786 title "Deep Learning Quantum States for Hamiltonian Estimation" @default.
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• W3205672786 doi "https://doi.org/10.1088/0256-307x/38/11/110301" @default.
• W3205672786 hasPublicationYear "2021" @default.
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