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    CHIP PREPARATION METHOD AND SYSTEM, AND CHIP
    2.
    发明公开
    CHIP PREPARATION METHOD AND SYSTEM, AND CHIP 审中-实审

    公开(公告)号：EP4395168A1

    公开(公告)日：2024-07-03

    申请号：EP23866669.7

    申请日：2023-06-13

    申请人： Tencent Technology (Shenzhen) Company Limited

    发明人： HU, Jingjing ,  DAI, Maochun ,  AN, Shuoming ,  ZHANG, Wenlong ,  LI, Dengfeng ,  ZHANG, Shengyu

    IPC分类号： H03F7/04 ,  G03F7/20

    CPC分类号： H03F7/04 ,  H10N60/01 ,  H10N60/12 ,  G03F7/20

    摘要： A chip preparation method and system, and a chip are provided, relating to the field of micro/nanofabrication technologies. The method includes the following steps: preparing, by using a laser direct writing exposure manner, a first underlying circuit of an impedance Josephson parametric amplifier and a second underlying circuit for testing, to obtain a first chip product (201); generating, on the first chip product by using the laser direct writing exposure manner, a photoresist structure for preparing a Josephson junction (202); cutting, from the first chip product, a second chip product on which the second underlying circuit is located and a third chip product on which the first underlying circuit is located (203); trail producing a Josephson junction sample based on a photoresist structure corresponding to the second underlying circuit, to obtain an oxidation condition (204); preparing, according to the oxidation condition, the Josephson junction based on a photoresist structure corresponding to the first underlying circuit, to obtain a fourth chip product (205); and obtaining a target chip product based on the fourth chip product (206).

    QUANTUM CIRCUIT AND QUANTUM PROCESSOR
    3.
    发明公开
    QUANTUM CIRCUIT AND QUANTUM PROCESSOR 审中-公开

    公开(公告)号：EP4064137A1

    公开(公告)日：2022-09-28

    申请号：EP21844599.7

    申请日：2021-09-08

    申请人： Tencent Technology (Shenzhen) Company Limited

    发明人： ZHOU, Yu ,  ZHANG, Zhenxing ,  AN, Shuoming ,  YIN, Zelong ,  HUAI, Sainan ,  GU, Xiu ,  XU, Xiong ,  ZHANG, Shengyu

    IPC分类号： G06N10/00

    摘要： The present disclosure discloses a quantum circuit and a quantum processor, relating to the field of quantum technologies. The quantum circuit includes: a qubit, a resonant cavity, and a feeder, the resonant cavity being coupled to the qubit, and the feeder being coupled to the qubit. The feeder is configured to feed an initialization signal to the qubit, the initialization signal being a modulation signal used for causing a frequency of the qubit to generate an oscillation. The oscillation causes an equivalent state exchange to occur between the qubit and the resonant cavity, and an excited state of the qubit is initialized to a ground state by using the resonant cavity. The present disclosure provides an efficient and high-precision qubit initialization solution. A modulation signal is applied to a qubit as an initialization signal, so that an excited state of the qubit quickly decays to a ground state by using a resonant cavity, thereby implementing rapid and high-fidelity initialization. In addition, a feedback loop does not need to be introduced to measure and read a state of the qubit, thereby reducing requirements for hardware.