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公开(公告)号：US12082512B2
公开(公告)日：2024-09-03
申请号：US16662586
申请日：2019-10-24
发明人： Georg Wolfgang Winkler , Roman Mykolayovych Lutchyn , Leonardus Petrus Kouwenhoven , Farhad Karimi
摘要： A semiconductor-superconductor hybrid device comprises a semiconductor layer and a superconductor layer. The superconductor layer is arranged over an edge of the semiconductor layer so as to enable energy level hybridisation between the semiconductor layer and the superconductor layer. The semiconductor layer is arranged in a sandwich structure between first and second insulating layers, each insulating layer being in contact with a respective opposed face of the semiconductor layer. This configuration may allow for good control over the geometry of the semiconductor layer and may improve tolerance to manufacturing variations. The device may be useful in a quantum computer. Also provided is a method of manufacturing the device, and a method of inducing topological behaviour in the device.
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公开(公告)号：US11994426B1
公开(公告)日：2024-05-28
申请号：US17098235
申请日：2020-11-13
申请人： PsiQuantum Corp.
发明人： Faraz Najafi , Eric Dudley
CPC分类号： G01J1/44 , G01J1/4228 , G06N10/00 , H10N60/30 , H10N60/84 , H10N69/00 , G01J2001/442 , G01J2001/4473
摘要： A photon counting device includes unit cells, a bias current source coupled to the unit cells, and a waveguide coupled to the unit cells. Each unit cell includes photodetector(s). Each photodetector includes superconducting component(s) and a transistor. The transistor includes a superconducting gate that is coupled in parallel with the photodetector(s), and a channel that is electrically isolated from the superconducting gate. For each unit cell, a photodetector is optically coupled to the waveguide. A superconducting component is configured to transition from the superconducting state to the non-superconducting state in response to a photon being incident upon the superconducting component while the superconducting component receives at least a portion of bias current output from the bias current source. The superconducting gate of the unit cell is configured to transition from the superconducting state to the non-superconducting state in response to the superconducting component transitioning to the non-superconducting state.
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公开(公告)号：US11756609B2
公开(公告)日：2023-09-12
申请号：US17293693
申请日：2019-11-14
申请人： Jozef Stefan Institute , Center of Excellence on Nanoscience and Nanotechnology—Nanocenter, Ljubljana
发明人： Dragan Mihailovic , Damjan Svetin , Anze Mraz , Rok Venturini
CPC分类号： G11C11/44 , H10N60/30 , H10N70/253 , B82Y10/00 , B82Y25/00
摘要： The invention describes a memory device which combines a switchable resistive element and a superconductor element electrically in parallel. The switchable resistive element comprises an active material, which is switchable between first and second values of electrical resistivity ρ1 and ρ2 at the same temperature, wherein ρ1 is different to ρ2. The superconductor element is operable so that at least part of the superconductor element is switchable from a superconducting state to a non-superconducting state. When the superconductor element is switched from the superconducting state to the non-superconducting state, a current injection is provided through the switchable resistive element capable of switching the switchable resistive element between said first and second values of electrical resistivity.
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公开(公告)号：US20240334833A1
公开(公告)日：2024-10-03
申请号：US18292523
申请日：2022-07-29
申请人： Richard Adams
发明人： Richard Adams
摘要： A method and apparatus for generating electricity using a thermodynamic inductor formed from a thermodynamic conductor winding that converts heat into a dynamic magnetic field density within the winding, inducing a current in the winding, which is electric power for loads. The winding may be a composite, including a coaxial arrangement of two or more superconducting layers. The first layer has a low critical magnetic field. When the field in the thermodynamic layer increases, the layer transitions to the intermediate state, cooling from the entropy increase, and absorbing heat. Subsequently when the field decreases, the layer resumes superconductivity, increasing available energy which is used to expel the field and induce generated electricity. The second conductive layer in the winding, in electrical contact with the first, remains in the superconducting state, reducing heating. A connected capacitor provides L-C oscillations and energy storage, maintaining cyclical operation, and powers connected and dissipating loads.
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公开(公告)号：US12107375B2
公开(公告)日：2024-10-01
申请号：US17461892
申请日：2021-08-30
申请人： PsiQuantum Corp.
发明人： Faraz Najafi , Qiaodan Jin Stone
摘要： An electric circuit includes a first superconducting component, a second superconducting component, a first electrically-insulating component that thermally couples the first superconducting component and the second superconducting component such that heat produced in response to the first superconducting component transitioning to a non-superconducting state is transferred through the first electrically-insulating component to the second superconducting component, and a photon detector coupled to the first superconducting component. The photon detector is configured to output a first current to the first superconducting component upon detection of a threshold number of photons. The electric circuit further includes an output component coupled to the second superconducting component. The output component is configured to be responsive to a voltage drop across the second superconducting component.
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公开(公告)号：US12095462B2
公开(公告)日：2024-09-17
申请号：US18127530
申请日：2023-03-28
申请人： PsiQuantum Corp.
发明人： Faraz Najafi
IPC分类号： H03K19/195 , H01L23/552 , H01L31/02 , H03K19/20 , H03K19/23 , H10N60/12 , H10N60/30 , H10N60/35 , H10N69/00
CPC分类号： H03K19/195 , H01L23/552 , H01L31/02027 , H03K19/1954 , H03K19/1958 , H03K19/20 , H03K19/23 , H10N60/124 , H10N60/30 , H10N69/00 , H10N60/35
摘要： An electric circuit includes one or more photon detector components and a superconducting logic gate component coupled to respective outputs of the one or more photon detector components. The electric circuit further includes a bias source electrically coupled to the superconducting logic gate component, the bias source configured to provide a bias current adapted to cause the superconducting logic gate component to function as a logical gate. The electric circuit also includes an optical switch component electrically coupled to an output of the superconducting logic gate component.
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公开(公告)号：US11961663B2
公开(公告)日：2024-04-16
申请号：US16955931
申请日：2018-12-12
发明人： Pierre Legendre , Pascal Tixador
CPC分类号： H01F6/06 , H01F27/2823 , H01F27/2871 , H01F27/323 , H10N60/30 , H01F2006/001
摘要： A superconducting current limiting dipole (L6), comprising a superconducting conductor (F6) wound so as to form a two-wire coil extending in a single plane, a layer of insulator (E1 to E11, H1) being arranged between two turns of said coil. The superconducting conductor (C1 to C6) consists of at least four separate superconducting cables (C1 to C6) wound in parallel and arranged in at least two pairs, each of the pairs being formed by two of said superconducting cables (C1 to C6) that are electrically connected to one another in a first connection area, and, in a second connection area, one of the superconducting cables of one pair is electrically connected to one of the superconducting cables of the other pair, the other superconducting cable of each pair being connected to an electrical connection terminal (T1, T2) or to an additional pair.
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公开(公告)号：US20230217841A1
公开(公告)日：2023-07-06
申请号：US17986774
申请日：2022-11-14
申请人： PsiQuantum Corp.
发明人： Faraz Najafi , Syrus Ziai
IPC分类号： H10N60/83 , H01L29/861 , B32B17/10 , B32B37/26 , H01L21/683 , H01L23/24 , H01L27/12 , H10N60/01 , H10N60/20 , H10N60/30 , H10N60/82
CPC分类号： H10N60/83 , H01L29/861 , B32B17/1055 , B32B37/26 , H01L21/6835 , H01L23/24 , H01L27/1266 , H10N60/01 , H10N60/20 , H10N60/30 , H10N60/82 , H01L2221/6835 , H01L2221/68395
摘要： An electronic device (e.g., a diode) is provided that includes a substrate and a patterned layer of superconducting material disposed over the substrate. The patterned layer forms a first electrode, a second electrode, and a loop coupling the first electrode with the second electrode by a first channel and a second channel. The first channel and the second channel have different minimum widths. For a range of current magnitudes, when a magnetic field is applied to the patterned layer of superconducting material, the conductance from the first electrode to the second electrode is greater than the conductance from the second electrode to the first electrode.
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公开(公告)号：US20240357946A1
公开(公告)日：2024-10-24
申请号：US18520462
申请日：2023-11-27
申请人： PsiQuantum Corp.
发明人： Faraz Najafi
摘要： A device includes a superconductor layer and a piezoelectric layer positioned adjacent to the superconductor layer. The piezoelectric layer is configured to apply a first strain to the superconductor layer in response to receiving a first voltage that is below a predefined voltage threshold and to apply a second strain to the superconductor layer in response to receiving a second voltage that is above the predefined voltage threshold. While the device is maintained below a superconducting threshold temperature for the superconductor layer and is supplied with current below a superconducting threshold current for the superconductor layer, the superconductor layer is configured to 1) operate in a superconducting state when the piezoelectric layer applies the first strain to the superconductor layer and 2) operate in an insulating state when the piezoelectric layer applies the second strain to the superconductor layer.
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公开(公告)号：US11980106B2
公开(公告)日：2024-05-07
申请号：US17760788
申请日：2020-08-31
摘要： A persistent current switch includes a superconducting wire including a substrate and a superconducting layer disposed on the substrate, and a heater. The superconducting wire includes a surface including a first portion and a second portion that are disposed apart from each other along a longitudinal direction of the superconducting wire. The first portion and the second portion face each other. The heater is sandwiched between the first portion and the second portion.
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