Single-amplitude quantum calculation simulation method

Abstract

The invention discloses a single-amplitude quantum computing simulation method. The method comprises the following steps of for each computing node of a distributed cluster, obtaining a target quantumprogram; constructing an undirected graph corresponding to the target quantum program; wherein the vertex of the undirected graph represents the quantum state of the operated quantum bit before or after the quantum logic gate is operated, and one edge of the undirected graph corresponds to one tensor; obtaining a quantum state corresponding to a to-be-measured target single amplitude, and calculating sub-amplitudes of the quantum state based on the quantum state and the undirected graph in cooperation with the GPU corresponding to the calculation node; wherein the sub-amplitudes are amplitudes corresponding to the undirected graph; and returning the sub-amplitudes to a main node of the distributed cluster so that the main node reduces each sub-amplitude to obtain the amplitude of the quantum state as a target single amplitude. The method is advantaged in that quantum computation simulation involving 50 or more quantum bits can be realized.

Description

Technical field [0001] The invention belongs to the technical field of quantum computation, in particular to a single amplitude quantum computation simulation method. technical background [0002] Quantum computer is a kind of physical device that follows the laws of quantum mechanics, performs high-speed mathematical and logical operations, stores and processes quantum information. A device is a quantum computer when it processes and calculates quantum information and runs quantum algorithms. [0003] Quantum computers can perform many tasks that classical computers can't, such as quantum simulation and decomposition of large prime factors. On the way of quantum computing, in order to realize "quantum hegemony", we need to realize quantum computers with more than 50 quantum bits and high fidelity. However, before the real realization, we can first simulate quantum computing through the related theories of quantum computing, realize the decoupling of software and hardware of quan...

AI Technical Summary

Problems solved by technology

This is unbearable for ordinary cloud platforms and even supercomputing platforms that provide quantum computing simulation services. The current full-amplitude simulator in academia can only simulate up to 49 qubits, which is based on the simulation of the world's largest supercomputer. As a result, it does not provide cloud services to the outside world, which is very unfavorable for the research and development of quantum programs and quantum applications

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