MULTIPLEXED READOUT SYSTEM
    2.
    发明申请

    公开(公告)号:US20220337207A1

    公开(公告)日:2022-10-20

    申请号:US17763331

    申请日:2020-09-23

    Applicant: Google LLC

    Abstract: A circuit is presented which includes a first amplifier having an input, a transmission line having first and second ends. The first end of the transmission line is coupled to an input of the first amplifier and a plurality of channels. Each channel includes a plurality of resonators arranged to read out a plurality of qubits, respectively and a readout line arranged to receive read out signals from the plurality of resonators. The readout line of each channel is coupled to the transmission line and each channel is configured to output a respective signal in a respective frequency band which is different from frequency bands of other channels in the plurality of channels.

    Low footprint resonator in flip chip geometry

    公开(公告)号:US11527696B2

    公开(公告)日:2022-12-13

    申请号:US16753431

    申请日:2017-10-05

    Applicant: Google LLC

    Abstract: A device includes a first substrate having a principal surface; a second substrate having a principal surface, in which the first substrate is bump-bonded to the second substrate such that the principal surface of the first substrate faces the principal surface of the second substrate; a circuit element having a microwave frequency resonance mode, in which a first portion of the circuit element is arranged on the principal surface of the first substrate and a second portion of the circuit element is arranged on the principal surface of the second substrate; and a first bump bond connected to the first portion of the circuit element and to the second portion of the circuit element, in which the first superconductor bump bond provides an electrical connection between the first portion and the second portion.

    LOW FOOTPRINT RESONATOR IN FLIP CHIP GEOMETRY

    公开(公告)号:US20250008845A1

    公开(公告)日:2025-01-02

    申请号:US18830300

    申请日:2024-09-10

    Applicant: Google LLC

    Abstract: A device includes a first substrate having a principal surface; a second substrate having a principal surface, in which the first substrate is bump-bonded to the second substrate such that the principal surface of the first substrate faces the principal surface of the second substrate; a circuit element having a microwave frequency resonance mode, in which a first portion of the circuit element is arranged on the principal surface of the first substrate and a second portion of the circuit element is arranged on the principal surface of the second substrate; and a first bump bond connected to the first portion of the circuit element and to the second portion of the circuit element, in which the first superconductor bump bond provides an electrical connection between the first portion and the second portion.

    Multiplexed readout system
    7.
    发明授权

    公开(公告)号:US11799432B2

    公开(公告)日:2023-10-24

    申请号:US17763331

    申请日:2020-09-23

    Applicant: Google LLC

    CPC classification number: H03F19/00 H03F2200/165 H03F2200/171

    Abstract: A circuit is presented which includes a first amplifier having an input, a transmission line having first and second ends. The first end of the transmission line is coupled to an input of the first amplifier and a plurality of channels. Each channel includes a plurality of resonators arranged to read out a plurality of qubits, respectively and a readout line arranged to receive read out signals from the plurality of resonators. The readout line of each channel is coupled to the transmission line and each channel is configured to output a respective signal in a respective frequency band which is different from frequency bands of other channels in the plurality of channels.

    Quantum processor design to increase control footprint

    公开(公告)号:US11538976B1

    公开(公告)日:2022-12-27

    申请号:US16933513

    申请日:2020-07-20

    Applicant: Google LLC

    Abstract: A quantum processor includes: a first chip comprising a qubit array, in which a plurality of qubits within the qubit array define an enclosed region on the first chip, in which each qubit of the plurality of qubits that define the enclosed region is arranged to directly electromagnetically couple to an adjacent qubit of the plurality of qubits that define the enclosed region, and in which each qubit of the qubit array comprises at least two superconductor islands, and a second chip bonded to the first chip, the second chip including one or more qubit control elements, in which the qubit control elements are positioned directly over the enclosed region of the first chip.

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