Fault-tolerant error correction decoding method and device of quantum circuit, and chip

Abstract

The invention discloses a fault-tolerant error correction decoding method and a fault-tolerant error correction decoding device of a quantum circuit, and a chip, which relate to the technical field ofartificial intelligence and quanta. The fault-tolerant error correction decoding method comprises the following steps of: acquiring real error symptom information of a quantum circuit, wherein the real error symptom information is obtained by performing noisy error symptom measurement on the quantum circuit by adopting a quantum error correction code; decoding the real error symptom information to obtain a logic error class and perfect error symptom information corresponding to the real error symptom information; and determining error result information of the quantum circuit according to thelogic error class and the perfect error symptom information, wherein the error result information is used for indicating data quantum bits with errors in the quantum circuit and corresponding error types. According to the fault-tolerant error correction decoding method and the fault-tolerant error correction decoding device, fault-tolerant error correction decoding is equivalent to a classification problem, so that an efficient neural network classifier is suitable to be adopted for performing fault-tolerant error correction decoding on the error symptom information, the fault-tolerant errorcorrection decoding speed is increased, and real-time fault-tolerant error correction decoding can be realized.

Description

technical field [0001] The embodiments of the present application relate to the fields of artificial intelligence and quantum technology, and in particular to an error-tolerant and error-correcting decoding method, device, and chip for quantum circuits. 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] After measuring the error symptoms of the quantum circuit with the quantum error-correcting code and obtaining the error symptom information, the decoding algorithm can be used to decode the error symptom information to determine the error data qubit and the corresponding error type in the quantum circuit. For the case where the error sympto...

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Problems solved by technology

[0004] However, in the real situation, the error symptom information is imperfect (that is, the error symptom measurement process is noisy), how to perform real-time error-tolerant and error-correction decoding on the error symptom information in this real situation, there is no effective method yet. solution

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