Method and device for simulating energy of target system based on quantum calculation and medium

Abstract

The invention discloses a method and device for simulating target system energy based on quantum computation.The method comprises the steps that quantum circuits corresponding to all subitem energy of the Hamiltonian amount of a to-be-simulated target system in quantum chemical simulation are obtained, and the number of the quantum circuits corresponding to all subitem energy of the Hamiltonian amount is calculated according to the number of the quantum circuits corresponding to all subitem energy of the Hamiltonian amount; the method comprises the steps of determining the number of distributed processors needing to be called, after receiving a calling request for the distributed processors, utilizing the distributed processors needing to be called to load quantum circuits corresponding to the energy of all subitems of the Hamiltonian, and measuring the energy of all the subitems of the Hamiltonian through the distributed processors to obtain measurement results; finally, the measurement results of all the distributed processors are combined and output, the obtained distributed measurement results serve as the energy of the to-be-simulated target system, support can be provided for calculation of the energy of the target system, the calculation speed is increased, the depth of a quantum circuit is reduced, and further development of quantum chemistry simulation application is promoted.

Description

technical field [0001] The invention belongs to the technical field of quantum computing, in particular to a method, device and medium for simulating the energy of a target system based on quantum computing. Background technique [0002] Quantum computer is a kind of physical device that follows the laws of quantum mechanics to perform high-speed mathematical and logical operations, store and process quantum information. When a device processes and computes quantum information and runs quantum algorithms, it is a quantum computer. Quantum computer has become a key technology under research because of its ability to deal with mathematical problems more efficiently than ordinary computers, for example, it can speed up the time to crack RSA keys from hundreds of years to hours. [0003] Quantum computing simulation is an analog computing that follows the laws of quantum mechanics by means of numerical computing and computer science. As a simulation program, it uses the high-sp...

AI Technical Summary

Problems solved by technology

However, for some macromolecules or relatively complex systems, the use of traditional calculation ideas will greatly increase the amount of calculation, and in the face of the huge amount of calculation involved, ordinary computers appear to have limited capabilities in terms of calculation accuracy and calculation size. To a certain extent, the development of quantum chemistry is restricted, which leads to the weak application of users in simulating quantum chemical systems, which affects the further expansion of quantum chemical simulation applications

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