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    A Circuit Assembly, A System and a Method for Cooling Quantum Electric Devices
    1.
    发明申请
    A Circuit Assembly, A System and a Method for Cooling Quantum Electric Devices 审中-公开

    公开(公告)号：US20200272925A1

    公开(公告)日：2020-08-27

    申请号：US16066207

    申请日：2016-12-27

    申请人： IQM Finland Oy

    发明人： Mikko MÖTTÖNEN ,  Kuan Yen Tan ,  Matti Partanen

    IPC分类号： G06N10/00 ,  H01L23/373 ,  H01L39/22 ,  H01L27/18

    摘要： A circuit assembly for cooling a quantum electrical device, use of said circuit assembly, a system and a method for cooling a quantum electric device are provided. The circuit assembly comprises a quantum electric device to be cooled, at least one normal-metal-insulator-superconductor (NIS) tunnel junction electrically connected to the quantum electric device and at least one superconductive lead for supplying a drive voltage VQCR for said at least one NIS tunnel junction. The quantum electric device is cooled when the voltage VQCR is supplied to at least one NIS tunnel junction, said voltage VQCR being equal to or below the voltage NΔ/e, where N=1 or N=2, N is the number of NIS tunnel junctions electrically coupled in series with the means for generating the voltage, Δ is the energy gap in the superconductor density of states, and e is the elementary charge.

    QUBIT RESET
    2.
    发明公开
    QUBIT RESET 审中-公开

    公开(公告)号：US20240242103A1

    公开(公告)日：2024-07-18

    申请号：US18563048

    申请日：2021-06-28

    申请人： IQM FINLAND OY

    发明人： Mikko MÖTTÖNEN ,  Jani TUORILA

    IPC分类号： G06N10/40

    CPC分类号： G06N10/40

    摘要： It is an objective to provide an arrangement for resetting at least one qubit. According to an embodiment, an arrangement for resetting at least one qubit comprises at least one qubit; an energy dissipation structure selectively couplable to the at least one qubit; and a control unit, configured to reset the at least one qubit by performing: couple the at least one qubit to the energy dissipation structure for a reset period using a control signal, wherein the control signal controls a coupling strength between the at least one qubit and the energy dissipation structure; and after the reset period, decouple the at least one qubit from the energy dissipation structure during a decoupling period using the control signal, wherein the coupling strength comprises, during the decoupling period, at least a temporally linearly decreasing component and at least one temporally sinusoidal component.