Method and device for quantum computing
A quantum computing and quantum technology, applied in the field of computer storage media and computer program products, can solve problems such as the increase in error types, the difficulty in realizing quantum error correction quantum gates, and the difficulty in realizing, achieving simple calculation process, improved accuracy, and practicality. Wide range of effects
Pending Publication Date: 2021-11-16
BEIJING BAIDU NETCOM SCI & TECH CO LTD
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Problems solved by technology
However, as the number of physical bits increases, the types of errors that may occur in the system will also increase. At the same time, the operation of multi-qubit encoding requires non-local interaction between physical qubits. Therefore, in experiments, quantum error correction and logical bit quantum doors are hard to achieve
The quantum error mitigation scheme does not require additional physical bits, but it imposes requirements on the error type and error controllability of the quantum circuit, which makes this method difficult to implement on current quantum computers
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[0026] Exemplary embodiments of the present disclosure are described below in conjunction with the accompanying drawings, which include various details of the embodiments of the present disclosure to facilitate understanding, and they should be regarded as exemplary only. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope of the present disclosure. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.
[0027] In the present disclosure, unless otherwise stated, using the terms "first", "second", etc. to describe various elements is not intended to limit the positional relationship, temporal relationship or importance relationship of these elements, and such terms are only used for Distinguishes one element from another. In some examples, the first element and the second ...
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The invention provides a method and device for quantum computing, and relates to the field of quantum computing. The implementation scheme comprises the following steps: generating a noisy driving pulse signal; amplifying a noise part in the driving pulse signal for at least one time to obtain at least one noise amplification pulse signal; respectively performing quantum evolution by using the driving pulse signal and each pulse signal in the at least one noise amplification pulse signal to obtain a plurality of noisy expected values; respectively calculating the distortion degree of each pulse signal in the driving pulse signal and the at least one noise amplification pulse signal relative to an ideal pulse signal; and calculating an ideal expected value according to the plurality of noisy expected values and the distortion degrees of the pulse signals corresponding to the noisy expected values. According to the method disclosed by the invention, the noise in the originally generated driving pulse signal is reduced and even eliminated, and the accuracy of the final quantum calculation result is improved.
Description
technical field [0001] The present disclosure relates to the field of computer technology, in particular to the field of quantum computing technology, and in particular to a method and device for quantum computing, electronic equipment, computer storage media and computer program products. Background technique [0002] Quantum computing is a new type of computing mode that follows the laws of quantum mechanics to regulate quantum information units for computing. The theoretical model of a universal quantum computer is a universal Turing machine reinterpreted with the laws of quantum mechanics. In terms of computing efficiency, due to the superposition of quantum mechanics, some known quantum algorithms are faster than traditional general-purpose computers in processing problems. [0003] In the process of quantum computing, it is necessary to input an ideal pulse signal to the quantum system of the quantum computer, so that the quantum system can perform the expected quantu...
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Login to View More IPC IPC(8): G06N10/00
CPCG06N10/00
Inventor 王琨杨朝辉
Owner BEIJING BAIDU NETCOM SCI & TECH CO LTD