Quantum error correction decoding method and device based on neural network, and chip

Abstract

The invention discloses a quantum error correction decoding method and a quantum error correction decoding device based on a neural network, and a chip, which relate to the technical field of artificial intelligence and quanta. The quantum error correction decoding method comprises the following steps of: acquiring error symptom information of a quantum circuit; performing block feature extractionon the error symptom information through using a neural network decoder to obtain feature information; and subjecting the feature information to fusion decoding processing through using the neural network decoder to obtain error result information, wherein the error result information is used for determining error data quantum bits and corresponding error types in the quantum circuit. According to the quantum error correction decoding method and the quantum error correction decoding device, a block feature extraction mode is adopted, the number of channels of the feature information obtainedby each feature extraction is reduced, and the input data of the next feature extraction is reduced, thereby being conductive to reducing the number of feature extraction layers in the neural networkdecoder, further reducing the depth of the neural network decoder, shortening the decoding time of the neural network decoder correspondingly, and satisfying the requirement of real-time error correction.

Description

technical field [0001] The embodiments of the present application relate to the fields of artificial intelligence and quantum technology, and in particular to a neural network-based quantum error correction decoding method, device and chip. Background technique [0002] Since qubits are very susceptible to noise, it is not realistic to implement quantum computing directly on physical qubits with current technology. The development of quantum error-correcting codes and error-tolerant quantum computing technology provides the possibility of realizing arbitrary precision quantum computing on noisy qubits in principle. [0003] If it is only stored for quantum information, then we can detect and collect all error symptoms and finally perform error correction based on all symptom information. This error correction method is called post-processing. However, when performing fault-tolerant quantum computing, the quantum circuit itself will change the type of error in real time, and...

AI Technical Summary

Problems solved by technology

[0004] Real-time error correction puts high rigid requirements on the running time margin of the decoding algorithm of quantum error-correcting codes, but some current decoding algorithms of quantum error-correcting codes cannot meet the requirements of real-time error correction

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