Qubit die attachment using preforms

    公开(公告)号:US10256206B2

    公开(公告)日:2019-04-09

    申请号:US15923346

    申请日:2018-03-16

    Abstract: Embodiments of the present disclosure describe novel qubit device packages, as well as related computing devices and methods. In one embodiment, an exemplary qubit device package includes a qubit die and a package substrate, where the qubit die is coupled to the package substrate using one or more preforms. In particular, a single preform may advantageously be used to replace a plurality of individual contacts, e.g. a plurality of individual solder bumps, electrically coupling the qubit die to the package substrate. Such packages may reduce design complexity and undesired coupling, and enable inclusion of larger numbers of qubits in a single qubit die.

    Quantum circuit assemblies with on-chip demultiplexers

    公开(公告)号:US11177912B2

    公开(公告)日:2021-11-16

    申请号:US15913026

    申请日:2018-03-06

    Abstract: One aspect of the present disclosure provides a quantum circuit assembly that includes a substrate with one or more qubit devices, and at least one demultiplexer included in a single chip with the qubit device(s). The demultiplexer is configured to receive a combined signal from external electronics, the combined signal including a combination of a plurality of signals in different frequency ranges, and to demultiplex said plurality of signals within the combined signal. The demultiplexer is further configured to apply different demultiplexed signals to different lines of a single qubit device, or/and to different qubit devices. Providing such demultiplexers on-chip with the qubit devices advantageously allows reducing the number of input/output lines coupling the chip with qubit devices and the external electronics.

    TSV-less die stacking using plated pillars/through mold interconnect

    公开(公告)号:US11296052B2

    公开(公告)日:2022-04-05

    申请号:US16639085

    申请日:2017-09-30

    Abstract: A device package has substrates disposed on top of one another to form a stack, and pads formed on at least one of the top surface and the bottom surface of each of the substrates. The device package has interconnects electrically coupling at least one of the top surface and the bottom surface of each substrate to at least one of the top surface and the bottom surface of another substrate. The device package has pillars disposed between at least one of the top surface and the bottom surface of one or more substrates to at least one of the top surface and the bottom surface of other substrates. The device package also has adhesive layers formed between at least one of the top surface and the bottom surface of one or more substrates to at least one of the top surface and the bottom surface of other substrates.

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