公开(公告)号：US20230231631A1

公开(公告)日：2023-07-20

申请号：US18001901

申请日：2021-06-16

Applicant: Teknologian tutkimuskeskus VTT Oy

Inventor： Antti KEMPPINEN ,  Jaani NISSILÄ ,  Jukka VIHERIÄLÄ ,  Joonas GOVENIUS

IPC: H04B10/508 ,  H03K3/42 ,  H04B10/516 ,  H04B10/70 ,  G06N10/40

CPC classification number: H04B10/508 ,  H03K3/42 ,  H04B10/516 ,  H04B10/70 ,  G06N10/40 ,  H01L27/1446

Abstract: A method for providing an electric waveform at a cryogenic temperatures includes



providing an optical signal, which comprises an optical waveform,
guiding the optical signal into a cryogenic chamber, and
converting the optical waveform of the optical signal into an electric waveform inside the cryogenic chamber.

公开(公告)号：US20240038680A1

公开(公告)日：2024-02-01

申请号：US18278241

申请日：2022-02-17

Applicant: TEKNOLOGIAN TUTKIMUSKESKUS VTT OY

Inventor： Janne LEHTINEN ,  Antti KEMPPINEN ,  Emma MYKKÄNEN ,  Mika PRUNNILA ,  Alberto RONZANI

IPC: H01L23/552 ,  H10N60/81 ,  H01L29/66

CPC classification number: H01L23/552 ,  H10N60/81 ,  H01L29/66977

Abstract: A device for shielding at least one component from thermal radiation, the device comprising at least a first substrate with a first surface and a second surface and a second substrate with a first surface and second surface, the first surface of the second substrate being arranged to at least partially face the second surface of the first substrate. The device additionally comprises at least a first component arranged on the first surface of the second substrate or the second surface of the first substrate and a shielding arrangement comprising a plurality of shielding elements-comprising electrically conductive material, the shielding elements being configured to essentially surround at least the first component to provide a shielded area within which the first component is located, wherein electromagnetic radiation having wavelength longer than a selected first wavelength is essentially prevented from reaching the shielded area.

公开(公告)号：US20220272869A1

公开(公告)日：2022-08-25

申请号：US17676581

申请日：2022-02-21

Applicant: Teknologian tutkimuskeskus VTT Oy

Inventor： Mika PRUNNILA ,  Alberto RONZANI ,  Emma MYKKÄNEN ,  Antti KEMPPINEN ,  Janne LEHTINEN

IPC: H05K7/20 ,  F28F21/08

Abstract: An inventive embodiment comprises a thermalization arrangement at cryogenic temperatures. The arrangement comprises a dielectric substrate (2) layer on which substrate a device/s or component/s (1) are positionable. A heat sink component (4) is attached on another side of the substrate. The arrangement further comprises a conductive layer (5) between the substrate layer (2) and the heat sink component (4). A joint between the substrate layer (2) and the conductive layer (5) has minimal thermal boundary resistance. Another joint between the conductive layer (5) and the cooling heat sink layer (4) is electrically conductive.

公开(公告)号：US20240015936A1

公开(公告)日：2024-01-11

申请号：US18470777

申请日：2023-09-20

Applicant: Teknologian tutkimuskeskus VTT Oy

Inventor： Mika PRUNNILA ,  Alberto RONZANI ,  Emma MYKKÄNEN ,  Antti KEMPPINEN ,  Janne LEHTINEN

IPC: H05K7/20 ,  F28F21/08 ,  H01L23/373 ,  F25D19/00 ,  H10N60/10

CPC classification number: H05K7/20509 ,  F28F21/08 ,  H01L23/3738 ,  H05K7/20372 ,  H05K7/20481 ,  F25D19/006 ,  H10N60/10 ,  F28F2013/006

Abstract: A thermalization arrangement at cryogenic temperatures is disclosed. The arrangement comprises a dielectric substrate layer on which substrate a device/s or component/s are positionable, and a heat sink component is attached on another side of the substrate. The arrangement further comprises a conductive layer between the substrate layer and the heat sink component. A joint between the substrate layer and the conductive layer has minimal phonon thermal boundary resistance. Energy of conductive layer phonons are arranged to be absorbed by electrons. Another joint between the conductive layer and the heat sink component is electrically conductive. The substrate layer and the conductive layer have similar acoustic properties

公开(公告)号：US20230239054A1

公开(公告)日：2023-07-27

申请号：US18001911

申请日：2021-06-16

Applicant: Teknologian tutkimuskeskus VTT Oy

Inventor： Jaani NISSILÄ ,  Antti KEMPPINEN

IPC: H04B10/508 ,  G06N10/40

CPC classification number: H04B10/508 ,  G06N10/40 ,  H03K4/00

Abstract: A method for generating a voltage waveform includes



providing an optical signal, which comprises one or more sequences of optical pulses,
distributing the optical pulses via optical waveguides to a plurality of optical-to-electrical converter units,
using the optical-to-electrical converter units to convert the optical pulses into electric driving current pulses,
generating voltage pulses by driving Josephson junctions with the electric driving current pulses.