Error-tolerant and error-correcting decoding method, device and chip for quantum circuits

Abstract

The application discloses an error-tolerant and error-correcting decoding method, device and chip for a quantum circuit, and relates to the fields of artificial intelligence and quantum technology. The method includes: obtaining real error symptom information of the quantum circuit, the real error symptom information is information obtained by measuring the noisy error symptom of the quantum circuit by using a quantum error correction code; decoding the real error symptom information to obtain the real error symptom information The logical error class and perfect error symptom information corresponding to the symptom information; according to the logical error class and perfect error symptom information, the error result information of the quantum circuit is determined, and the error result information is used to indicate the wrong data qubit in the quantum circuit and the corresponding error type. This application realizes that error-tolerant and error-correcting decoding is equivalent to a classification problem, so that it is suitable to use an efficient neural network classifier to perform error-tolerant and error-correcting decoding on error symptom information, thereby improving the speed of error-tolerant and error-correcting decoding, and realizing real-time Error-tolerant and error-correcting decoding.

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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