公开(公告)号：US11802663B2

公开(公告)日：2023-10-31

申请号：US17144964

申请日：2021-01-08

Applicant: International Business Machines Corporation

Inventor： Antonio Corcoles-Gonzalez ,  Patryk Gumann ,  Jerry M. Chow

IPC: F17C3/08

CPC classification number: F17C3/085 ,  F17C2203/0391

Abstract: Techniques facilitating multiple cryogenic systems sectioned within a common vacuum space are provided. In one example, a cryostat can comprise a plurality of thermal stages and a thermal switch. The plurality of thermal stages can intervene between a 4-Kelvin (K) stage and a Cold Plate stage. The plurality of thermal stages can include a Still stage and an intermediate thermal stage that can be directly coupled mechanically to the Still stage via a support rod. The thermal switch can be coupled to the intermediate thermal stage and an adjacent thermal stage. The thermal switch can facilitate modifying a thermal profile of the cryostat by providing a switchable thermal path between the intermediate thermal stage and the adjacent thermal stage.

公开(公告)号：US11727295B2

公开(公告)日：2023-08-15

申请号：US16373334

申请日：2019-04-02

Applicant: International Business Machines Corporation

Inventor： Sean Hart ,  Patryk Gumann

IPC: H03K17/00 ,  G06N10/00 ,  H01P7/06 ,  H03K17/92 ,  H10N69/00

CPC classification number: G06N10/00 ,  H01P7/065 ,  H03K17/92 ,  H10N69/00

Abstract: A superconducting coupling device includes a resonator structure. The resonator structure has a first end configured to be coupled to a first device and a second end configured to be coupled to a second device. A gate is positioned proximal to a portion of the resonator structure. The gate is configured to receive a gate voltage and vary a kinetic inductance of the portion of the resonator based upon the gate voltage. The varying of the kinetic inductance induces the resonator structure to vary a strength of coupling between the first superconducting device and the second superconducting device.

公开(公告)号：US20230188124A1

公开(公告)日：2023-06-15

申请号：US17548471

申请日：2021-12-10

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

Inventor： Salvatore Bernardo Olivadese ,  Patryk Gumann ,  Sean Hart ,  April Carniol

IPC: H03K5/1252 ,  H03K17/92 ,  G06N10/20

CPC classification number: H03K5/1252 ,  H03K17/92 ,  G06N10/20

Abstract: A quantum circuit includes a first qubit and a second qubit. A bus resonator transmission line is coupled between the first qubit and the second qubit. A readout bus is coupled to the first qubit. A switch is coupled to the bus resonator transmission line between the first qubit and the second qubit.

公开(公告)号：US20230133709A1

公开(公告)日：2023-05-04

申请号：US18148145

申请日：2022-12-29

Applicant: International Business Machines Corporation

Inventor： Devendra K. Sadana ,  Ning Li ,  Stephen W. Bedell ,  Sean Hart ,  Patryk Gumann

IPC: H10N60/80 ,  G06N10/00 ,  H10N60/10

Abstract: A gated Josephson junction includes a substrate and a vertical Josephson junction formed on the substrate and extending substantially normal the substrate. The vertical Josephson junction includes a first superconducting layer, a semiconducting layer, and a second superconducting layer. The first superconducting layer, the semiconducting layer, and the second superconducting layer form a stack that is substantially perpendicular to the substrate. The gated Josephson junction includes a gate dielectric layer in contact with the first superconducting layer, the semiconducting layer, and the second superconducting layer at opposing side surfaces of the vertical Josephson junction, and a gate electrically conducting layer in contact with the gate dielectric layer. The gate electrically conducting layer is separated from the vertical Josephson junction by the gate dielectric layer. In operation, a voltage applied to the gate electrically conducting layer modulates a current through the semiconducting layer of the vertical Josephson junction.

公开(公告)号：US11552380B2

公开(公告)日：2023-01-10

申请号：US17070458

申请日：2020-10-14

Applicant: International Business Machines Corporation

Inventor： Patryk Gumann ,  Salvatore Bernardo Olivadese

IPC: H01P11/00 ,  H01P1/203 ,  H01B12/02 ,  H01P1/30 ,  G06N10/00 ,  H01P1/20 ,  H01P3/00 ,  H05K7/20 ,  H01P1/22

Abstract: An architecture for, and techniques for fabricating, a thermal decoupling device are provided. In some embodiments, thermal decoupling device can be included in a thermally decoupled cryogenic microwave filter. In some embodiments, the thermal decoupling device can comprise a dielectric material and a conductive line. The dielectric material can comprise a first channel that is separated from a second channel by a wall of the dielectric material. The conductive line can comprise a first segment and a second segment that are separated by the wall. The wall can facilitate propagation of a microwave signal between the first segment and the second segment and can reduce heat flow between the first segment and the second segment of the conductive line.

公开(公告)号：US11544613B2

公开(公告)日：2023-01-03

申请号：US16727157

申请日：2019-12-26

Applicant: International Business Machines Corporation

Inventor： Salvatore Bernardo Olivadese ,  Daniela Florentina Bogorin ,  Nicholas Torleiv Bronn ,  Sean Hart ,  Patryk Gumann

IPC: G06N10/00 ,  G06N20/00 ,  G06N3/08

Abstract: Systems, computer-implemented methods, and computer program products that can facilitate determining a state of a qubit are described. According to an embodiment, a system can comprise a memory that stores computer executable components and a processor that executes the computer executable components stored in the memory. The computer executable components can comprise a relation determining component that can determine relation of a status signal of a quantum computing device to a noise value of the quantum computing device. The system can further include an operation time estimator that can estimate an operation time for the quantum computing device based on the relation of the status signal to the noise value.

公开(公告)号：US11417822B2

公开(公告)日：2022-08-16

申请号：US16718095

申请日：2019-12-17

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

Inventor： Nicholas Torleiv Bronn ,  Daniela Florentina Bogorin ,  Patryk Gumann ,  Sean Hart ,  Salvatore Bernardo Olivadese

IPC: H01L39/22 ,  H01L39/02 ,  H01L39/04 ,  H01L27/18 ,  G06N10/00 ,  H03F19/00 ,  H01L39/24 ,  H03K19/195 ,  B82Y10/00 ,  G06N10/40

Abstract: A system includes a quantum processor includes a plurality of qubits. For each qubit, there is a circulator operative to receive a control signal and an output signal from the qubit. An isolator is coupled to an output of the circulator. A quantum-limited amplifier is coupled to an output of the isolator and configured to provide an output of the qubit. A multiplexor (MUX) is configured to frequency multiplex the outputs of at least two of the plurality of qubits as a single output of the quantum processor.

公开(公告)号：US20220238663A1

公开(公告)日：2022-07-28

申请号：US17659519

申请日：2022-04-18

Applicant: International Business Machines Corporation

Inventor： Steven J. Holmes ,  Devendra K. Sadana ,  Sean Hart ,  Patryk Gumann ,  Stephen W. Bedell ,  Ning Li

IPC: H01L29/41 ,  G06N10/00 ,  B82Y10/00 ,  B82Y40/00 ,  H01L29/06 ,  H01L39/10 ,  H01L39/24

Abstract: Devices, systems, methods, computer-implemented methods, apparatus, and/or computer program products that can facilitate a suspended Majorana fermion device comprising an ion implant defined nanorod in a semiconducting device are provided. According to an embodiment, a quantum computing device can comprise a Majorana fermion device coupled to an ion implanted region. The quantum computing device can further comprise an encapsulation film coupled to the ion implanted region and a substrate layer. The encapsulation film suspends the Majorana fermion device in the quantum computing device.

公开(公告)号：US20220219950A1

公开(公告)日：2022-07-14

申请号：US17144767

申请日：2021-01-08

Applicant: International Business Machines Corporation

Inventor： Patryk Gumann ,  Sean Hart ,  Valerio A. Grendanin ,  Raymond A. Watters ,  David Zarsky ,  Gilbert Bauer

IPC: B66C23/16 ,  B66C23/62 ,  B66C1/22 ,  B66C23/70 ,  B66C23/60

Abstract: Techniques facilitating increased operational reliability for jib cranes are provided. In one example, a jib crane can comprise a mast, a shaft mechanism, and a rod. The mast can extend vertically from a base structure. The shaft mechanism can be disposed within the mast. The rod can be coupled to a boom arm and can be disposed within the shaft mechanism. Rotation of the rod can facilitate continuous rotation of the boom arm about a longitudinal axis of the rod with respect to the base structure.

公开(公告)号：US20210271999A1

公开(公告)日：2021-09-02

申请号：US16591477

申请日：2019-10-02

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

Inventor： Hanhee Paik ,  Patryk Gumann ,  Martin O. Sandberg ,  Jason S. Orcutt

IPC: G06N10/00 ,  G06E1/00

Abstract: A quantum computer includes a quantum computing system; a transducer disposed inside the quantum computing system, the transducer being configured to receive an optical control propagating wave and output a microwave control propagating wave; and a quantum processor comprising a plurality of qubits, the plurality of qubits being disposed in the quantum computing system, each qubit of the plurality of qubits being configured to receive at least a portion of the microwave control propagating wave to control a quantum state of each qubit of the plurality of qubits.