A manipulation method of the central processing unit of a universal quantum computer

A central processing unit and quantum computer technology, applied in the field of quantum computers, can solve problems such as low fidelity, low fidelity of quantum states, and large interference, and achieve high fidelity, simple and convenient manipulation, and reduction of errors or message interference. Effect

Active Publication Date: 2021-06-29
WENZHOU UNIV
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Problems solved by technology

However, the fidelity of these coupling methods through the quantum bus is much lower than that of the direct capacitive coupling, especially when more than three multi-qubits are coupled, the interference caused by the interaction between the qubits is very large, and the multi-qubits The fidelity of the quantum state obtained by the system after multiple coupling operations is low

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  • A manipulation method of the central processing unit of a universal quantum computer
  • A manipulation method of the central processing unit of a universal quantum computer
  • A manipulation method of the central processing unit of a universal quantum computer

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[0046] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0047] In order to find the best coupling mode with high fidelity, and realize the coupling operation between any two qubits and the parallel coupling operation between multiple qubits, the inventors combined the central processing unit of the quantum computer It is designed to take a qubit and its corresponding coupling capacitor as the basic unit, and connect all the basic units directly to the same point through its corresponding coupling capacitor, that is, as figure 1 As shown, one end of a series of capacitors is directly connected to the same point, and the other end of each capacitor is dir...

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Abstract

The embodiment of the present invention discloses a method for operating the central processor of a general-purpose quantum computer, which includes preparing each qubit to an initial state by adjusting the external magnetic flux of each qubit contained in all basic units and the gate voltage of each qubit to realize each qubit. The coupling between qubits is initially 0; the current qubit coupling mode is selected; according to the selected current qubit coupling mode, the qubits to be coupled and connected are determined, and the qubits to be coupled and other qubits are separately connected. Corresponding external magnetic flux adjustment; select the next operation, and determine the specific manipulation of each qubit according to the selected current operation. The implementation of the invention can solve the coupling operation between any two qubits and the parallel coupling operation between multiple qubits, and the quantum state obtained by coupling has high fidelity.

Description

technical field [0001] The invention relates to the technical field of quantum computers, in particular to a method for manipulating a central processing unit of a general-purpose quantum computer. Background technique [0002] Quantum computers based on superposition and entanglement of quantum states have incomparable advantages over classical computers in solving some specific problems such as cryptanalysis and mass search. The huge potential has attracted governments of various countries and many large technology companies to invest in research and release research plans. [0003] At present, there are many physical systems that can realize quantum computing, such as optical systems, ion traps, quantum dots, and superconducting quantum circuits. Among them, the quantum circuit based on the Josephson effect has become one of the internationally recognized physical carriers that are expected to realize quantum computing due to its advantages in manipulability and scalabil...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06N10/00
CPCG06N10/00
Inventor 姜年权
Owner WENZHOU UNIV
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