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    Generating error-resistant quantum control pulses from geometrical curves
    143.
    发明授权
    Generating error-resistant quantum control pulses from geometrical curves 有权

    公开(公告)号：US11966816B2

    公开(公告)日：2024-04-23

    申请号：US17765875

    申请日：2020-10-02

    Applicant: VIRGINIA TECH INTELLECTUAL PROPERTIES, INC.

    Inventor： Edwin Barnes ,  Junkai Zeng

    IPC: G06N10/60 ,  H03K17/92

    CPC classification number: G06N10/60 ,  H03K17/92

    Abstract: Aspects of generating error-resistant quantum control pulses from geometrical curves are described. In some embodiments, a closed space curve is parameterized for a target gate operation of a quantum computing device. The closed space curve corresponds to an evolution operator of a time-dependent Schrödinger equation associated with the target gate operation. A control field definition is identified for the target gate operation based at least in part on a geometrical analysis of the evolution operator of the time-dependent Schrödinger equation. The target gate operation is implemented for the quantum computing device based on the control field definition.

    REDUCED COMMON MODE VOLTAGE EMISSION CONVERTER
    145.
    发明公开
    REDUCED COMMON MODE VOLTAGE EMISSION CONVERTER 审中-公开

    公开(公告)号：US20240097572A1

    公开(公告)日：2024-03-21

    申请号：US17932399

    申请日：2022-09-15

    Applicant: VIRGINIA TECH INTELLECTUAL PROPERTIES, INC.

    Inventor： Yuliang Cao ,  Yijie Bai ,  Vladimir Mitrovic ,  Boran Fan ,  Dong Dong ,  Rolando Burgos

    IPC: H02M3/335 ,  H02M1/08

    CPC classification number: H02M3/33573 ,  H02M1/08

    Abstract: Power systems including converters that exhibit reduced common mode voltage emissions are described. In one example, a power converter system includes an input and an output, a multi-level switch bridge coupled between the input and the output, an input capacitor branch coupled across the input, an output capacitor branch coupled across the output, and a controller configured to generate switching control signals for the multi-level buck-boost switch bridge. The multi-level switch bridge also includes a plurality of inductors in one example. In one case, a quadrangular or quadrangle control mode can be relied upon to switch the multi-level switch bridge, to minimize the ripple in the inductors, achieve zero voltage switching, reduce common mode electromagnetic interference emission by the converter, and for other benefits.

    MONOLITHIC CASCODE MULTI-CHANNEL HIGH ELECTRON MOBILITY TRANSISTORS
    146.
    发明公开
    MONOLITHIC CASCODE MULTI-CHANNEL HIGH ELECTRON MOBILITY TRANSISTORS 审中-公开

    公开(公告)号：US20240079484A1

    公开(公告)日：2024-03-07

    申请号：US17939373

    申请日：2022-09-07

    Applicant: Virginia Tech Intellectual Properties, Inc.

    Inventor： Yuhao ZHANG ,  Ming XIAO

    IPC: H01L29/778 ,  H01L27/06 ,  H01L27/088 ,  H01L29/20

    CPC classification number: H01L29/7786 ,  H01L27/0605 ,  H01L27/0883 ,  H01L29/2003

    Abstract: This disclosure provides semiconductor device including a first transistor with a first gate terminal, a first source terminal, and the first drain terminal, the first transistor being a depletion mode transistor and including a plurality of two-dimensional carrier channels of a conductivity type being one of a n-type or a p-type conductivity. The semiconductor device also includes a second transistor with a second gate terminal, a second source terminal, and a second drain terminal, the second transistor being an enhancement mode transistor, a gate-source interconnect forming an electrical connection between the first gate terminal and the second source terminal, and a drain-source interconnect forming an electrical connection between the first source terminal and the second drain terminal. The first transistor and the second transistor are fabricated on the same wafer or substrate.

    MAGNETIC SENSING OPTICAL FIBER
    149.
    发明公开
    MAGNETIC SENSING OPTICAL FIBER 审中-公开

    公开(公告)号：US20240053415A1

    公开(公告)日：2024-02-15

    申请号：US18332248

    申请日：2023-06-09

    Applicant: VIRGINIA TECH INTELLECTUAL PROPERTIES, INC.

    Inventor： Zachary Daniel Hileman ,  Daniel Homa ,  Gary Pickrell ,  Eileen Martin

    IPC: G01R33/09

    CPC classification number: G01R33/091

    Abstract: A magnetic field sensor in the form of a multi-material optical fiber is described. The magnetic sensing optical fiber of the present disclosure can leverage optics and magnetostriction to sense an external magnetic field adjacent to the fiber. The magnetic sensing optical fiber can be customized to achieve various desired sensing sensitivities for various applications, including measuring while drilling and unconventional oil and gas applications. In one example, an optical fiber can include a cladding that can extend from a first end to a second end of the optical fiber. The optical fiber can further include an optical core within the cladding. The optical core can extend along the optical fiber between the first end and the second end. The optical fiber can also include a magnetostrictive element within the cladding. The magnetostrictive element can extend along the optical fiber between the first end and the second end.

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