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Quantum circuit processing method, device and apparatus

A processing method and technology of quantum circuits, applied in the computer field, can solve the problems such as the decrease of quantum fidelity and the increase of errors in calculation results, and achieve the effect of improving accuracy and avoiding the decrease of quantum fidelity.

Active Publication Date: 2020-07-28
BEIJING BAIDU NETCOM SCI & TECH CO LTD
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  • Abstract
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Problems solved by technology

In this way, the number of CNOT gates in the converted circuit is large, which reduces the quantum fidelity in quantum computing and leads to an increase in the error of the calculation result

Method used

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  • Quantum circuit processing method, device and apparatus
  • Quantum circuit processing method, device and apparatus
  • Quantum circuit processing method, device and apparatus

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Embodiment Construction

[0043] Exemplary embodiments of the present application are described below in conjunction with the accompanying drawings, which include various details of the embodiments of the present application 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 and spirit of the application. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.

[0044] For ease of understanding, concepts involved in the embodiments of the present application are briefly introduced first.

[0045] Quantum bit: Quantum bit (abbreviated as qubit) is the basic unit of quantum computing, just as the classical bit is the basic unit of classical computing. Different from the classic bit, the classic bit is deterministic, it can be...

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Abstract

The invention discloses a quantum circuit processing method, device and apparatus, and relates to the technical field of quantum computing. According to the technical scheme, the method comprises thesteps that according to a physical connection relationship among the plurality of physical quantum bits; adding an SWAP gate among the plurality of physical quantum bits by adopting a target exchangemode, when the SWAP gate is added, considering the number of CNOT gates added among a plurality of physical quantum bits after a target switching mode is adopted and the number of newly added executedCNOT gates in logic circuit information after the target switching mode is adopted. Therefore, it can be avoided that a large number of CNOT gates are additionally introduced into the converted circuit, so that quantum fidelity in quantum calculation is prevented from being reduced, and the precision of a quantum calculation result is improved.

Description

technical field [0001] The present application relates to the field of computer technology, in particular to a quantum circuit processing method, device and equipment. Background technique [0002] In quantum computing devices, due to the limitation of connectivity between quantum bits (qubits), quantum computing devices can only perform gate transformations between pairs of connected qubits or on a single qubit. For example, a CONT gate can only be executed between two qubits that have a connectivity relationship. Therefore, in order to enable the hybrid quantum algorithm to run on the quantum computing device, it is necessary to convert the logic circuit involved in the hybrid quantum algorithm so that the converted circuit meets the limitation of the physical connectivity of the quantum computing device, that is, the converted circuit needs The qubit pairs for CNOT gate transformation are all qubit pairs with physical connectivity. [0003] In the prior art, when perfor...

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Application Information

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IPC IPC(8): G06N10/00
CPCG06N10/00
Inventor 刘树森段润尧李三江周祥臻冯元
Owner BEIJING BAIDU NETCOM SCI & TECH CO LTD
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