SIGNAL DISTRIBUTION FOR A QUANTUM COMPUTING SYSTEM

    公开(公告)号:US20210175095A1

    公开(公告)日:2021-06-10

    申请号:US17263619

    申请日:2018-07-30

    申请人: Google LLC

    摘要: A method of fabricating a carrier chip for distributing signals among circuit elements of a quantum computing device, includes: providing a multilayer wiring stack, the multilayer wiring stack comprising alternating layers of dielectric material and wiring; bonding a capping layer to the multilayer wiring stack, in which the capping layer includes a single crystal silicon dielectric layer; forming a via hole within the capping layer, in which the via hole extends to a first wiring layer of the multilayer wiring stack; forming an electrically conductive via within the via hole and electrically coupled to the first wiring layer; and forming a circuit element on a surface of the capping layer, in which the circuit element is directly electrically coupled to the electrically conductive via.

    Integrating circuit elements in a stacked quantum computing device

    公开(公告)号:US10950654B2

    公开(公告)日:2021-03-16

    申请号:US16487555

    申请日:2017-12-12

    申请人: Google LLC

    摘要: A stacked quantum computing device including: a first chip including a superconducting qubit, where the superconducting qubit includes a superconducting quantum interference device (SQUID) region, a control region, and a readout region, and a second chip bonded to the first chip, where the second chip includes a first control element overlapping with the SQUID region, a second control element displaced laterally from the control region and without overlapping the control region, and a readout device overlapping the readout region.

    INTEGRATING CIRCUIT ELEMENTS IN A STACKED QUANTUM COMPUTING DEVICE

    公开(公告)号:US20200058702A1

    公开(公告)日:2020-02-20

    申请号:US16487555

    申请日:2017-12-12

    申请人: Google LLC

    摘要: A stacked quantum computing device including: a first chip including a superconducting qubit, where the superconducting qubit includes a superconducting quantum interference device (SQUID) region, a control region, and a readout region, and a second chip bonded to the first chip, where the second chip includes a first control element overlapping with the SQUID region, a second control element displaced laterally from the control region and without overlapping the control region, and a readout device overlapping the readout region.