Data processing method and device based on quantum circuit, electronic equipment and medium

Abstract

The invention provides a data processing method and device based on a quantum circuit, electronic equipment, a computer readable storage medium and a computer program product, and relates to the field of quantum computing, in particular to the technical field of data processing. According to the implementation scheme, the method includes obtaining a to-be-solved Hamiltonian of an n quantum bit system, wherein n is a positive integer; determining a to-be-optimized quantum circuit capable of acting on the n quantum bits; obtaining a mixed state of n quantum bits, wherein the mixed state is a probability mixture of a plurality of orthogonal calculation ground states; inputting the mixed state of the n quantum bits into a quantum circuit, and measuring the Hamiltonian based on the quantum state output by the quantum circuit to obtain an expected value; optimizing the parameters corresponding to the quantum circuit based on the expected value to obtain the quantum circuit after parameter optimization; and inputting a corresponding calculation ground state in a plurality of orthogonal calculation ground states into the optimized quantum circuit to obtain a characteristic state corresponding to the Hamiltonian.

Description

technical field [0001] The present disclosure relates to the field of quantum computing, in particular to the technical field of data processing, and in particular to a quantum circuit-based data processing method, device, electronic equipment, computer-readable storage medium, and computer program product. Background technique [0002] In the fields of physics and chemistry, it has always been a very important problem to extract the information of the ground state (Ground State) and excited state (Excited State) of physical systems such as molecules and atoms. According to the principle of quantum mechanics, the ground state and excited state of the system and their corresponding energies are described by the Hamiltonian of the system. Generally speaking, classical computers can be used to extract the eigenvectors of the Hamiltonian, but when the scale of the system reaches a certain level, classical computers cannot be used to extract the eigenvectors. With the developmen...

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Problems solved by technology

Generally speaking, a classical computer can be used to extract the eigenvector of the Hamiltonian, but when the system scale reaches a certain level, the classical computer cannot be used to extract the eigenvector

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