High density microwave hermetic interconnects for quantum applications

    公开(公告)号:US11900217B2

    公开(公告)日:2024-02-13

    申请号:US18055435

    申请日:2022-11-15

    IPC分类号: G06N10/00 H01P3/06 H01P5/08

    CPC分类号: G06N10/00 H01P3/06 H01P5/085

    摘要: A quantum computer includes a refrigeration system under vacuum including a containment vessel, a qubit chip contained within a refrigerated vacuum environment defined by the containment vessel. The quantum computer further includes a plurality of interior electromagnetic waveguides and a plurality of exterior electromagnetic waveguides. The quantum computer further includes a hermetic connector assembly operatively connecting the interior electromagnetic waveguides to the exterior electromagnetic waveguides while maintaining the refrigerated vacuum environment. The hermetic connector assembly includes an exterior multi-waveguide connector, an interior multi-waveguide connector, and a dielectric plate arranged between and hermetically sealed with the exterior multi-waveguide connector and the interior multi-waveguide connector. The dielectric plate permits electromagnetic energy when carried by the interior and exterior pluralities of electromagnetic waveguides to pass therethrough.

    High density microwave hermetic interconnects for quantum applications

    公开(公告)号:US11551125B2

    公开(公告)日:2023-01-10

    申请号:US16281657

    申请日:2019-02-21

    IPC分类号: G06N10/00 H01P3/06 H01P5/08

    摘要: A quantum computer includes a refrigeration system under vacuum including a containment vessel, a qubit chip contained within a refrigerated vacuum environment defined by the containment vessel. The quantum computer further includes a plurality of interior electromagnetic waveguides and a plurality of exterior electromagnetic waveguides. The quantum computer further includes a hermetic connector assembly operatively connecting the interior electromagnetic waveguides to the exterior electromagnetic waveguides while maintaining the refrigerated vacuum environment. The hermetic connector assembly includes an exterior multi-waveguide connector, an interior multi-waveguide connector, and a dielectric plate arranged between and hermetically sealed with the exterior multi-waveguide connector and the interior multi-waveguide connector. The dielectric plate permits electromagnetic energy when carried by the interior and exterior pluralities of electromagnetic waveguides to pass therethrough.

    Dielectric holder for quantum devices

    公开(公告)号:US11349060B2

    公开(公告)日:2022-05-31

    申请号:US16905519

    申请日:2020-06-18

    摘要: A device includes a first substrate formed of a first material that exhibits a threshold level of thermal conductivity. The threshold level of thermal conductivity is achieved at a cryogenic temperature range in which a quantum circuit operates. In an embodiment, the device also includes a second substrate disposed in a recess of the first substrate, the second substrate formed of a second material that exhibits a second threshold level of thermal conductivity. The second threshold level of thermal conductivity is achieved at a cryogenic temperature range in which a quantum circuit operates. In an embodiment, at least one qubit is disposed on the second substrate. In an embodiment, the device also includes a transmission line configured to carry a microwave signal between the first substrate and the second substrate.

    Packaging and thermalization of cryogenic dispersive resistive hybrid attenuators for quantum microwave circuits

    公开(公告)号:US10903541B2

    公开(公告)日:2021-01-26

    申请号:US16787846

    申请日:2020-02-11

    摘要: A hybrid microwave attenuator is constructed by forming a circuit and a housing. The circuit has two ports, a resistive component configured to attenuate some frequencies in an input signal (transmitted signal), and a dispersive component configured to attenuate some frequencies within a frequency range. The resistive component and the dispersive component are arranged in a series configuration relative to one another between the two ports of the circuit. The housing includes a closable structure in which the circuit is positioned, the structure being formed of a material that exhibits at least a threshold level of thermal conductivity, where the threshold level of thermal conductivity is achieved at a cryogenic temperature range in which a quantum computing circuit operates. The housing further includes a pair of microwave connectors, the pair of connectors being thermally coupled to the housing.