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公开(公告)号：US20200304126A1
公开(公告)日：2020-09-24
申请号：US16840166
申请日：2020-04-03
Applicant: PsiQuantum Corp.
Inventor： Faraz Najafi
IPC: H03K19/195 , H01L23/552 , H01L27/18 , H01L39/16 , H01L39/22 , H03K19/20 , H01L31/02 , H03K19/23
Abstract: A device includes a plurality of superconducting components, each having a first terminal and a second terminal; a plurality of current sources, being electrically-connected to the first terminal of a corresponding superconducting component and configured to selectively provide a first current; and a bias current source electrically-connected to the respective first terminal of each of the plurality of superconducting components. The bias current source is configured to provide a second current adapted to bias the superconducting components such that (1) a combination of the second current and the first current from each current source causes the plurality of superconducting components to transition from the superconducting state to the non-superconducting state, and (2) a combination of the second current and the first current from each current source of only a subset of the plurality of current sources does not cause the plurality of superconducting components to transition to the non-superconducting state.
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公开(公告)号：US10374611B2
公开(公告)日：2019-08-06
申请号：US16151190
申请日：2018-10-03
Applicant: PSIQUANTUM Corp.
Inventor： Faraz Najafi
IPC: H03K19/195 , H03K19/23 , H01L31/02
Abstract: The various embodiments described herein include methods, devices, and systems for implementing logic gates. In one aspect, a circuit includes: (1) a superconducting component having a plurality of alternating narrow and wide portions; (2) a plurality of heat sources, each heat source of the plurality of heat sources coupled to a corresponding narrow portion of the plurality of alternating narrow and wide portions and configured to selectively provide heat to the corresponding narrow portion; (3) a bias current source coupled to each narrow portion of the plurality of alternating narrow and wide portions; and (4) an output node adapted to output a respective current while the plurality of superconducting components is in the non-superconducting state.
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公开(公告)号：US20190109594A1
公开(公告)日：2019-04-11
申请号：US16151190
申请日：2018-10-03
Applicant: PSIQUANTUM Corp.
Inventor： Faraz Najafi
IPC: H03K19/195 , H01L31/02 , H03K19/23
CPC classification number: H03K19/1958 , H01L23/552 , H01L27/18 , H01L31/02027 , H01L39/16 , H01L39/18 , H01L39/225 , H03K19/195 , H03K19/1954 , H03K19/20 , H03K19/23
Abstract: The various embodiments described herein include methods, devices, and systems for implementing logic gates. In one aspect, a circuit includes: (1) a superconducting component having a plurality of alternating narrow and wide portions; (2) a plurality of heat sources, each heat source of the plurality of heat sources coupled to a corresponding narrow portion of the plurality of alternating narrow and wide portions and configured to selectively provide heat to the corresponding narrow portion; (3) a bias current source coupled to each narrow portion of the plurality of alternating narrow and wide portions; and (4) an output node adapted to output a respective current while the plurality of superconducting components is in the non-superconducting state.
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公开(公告)号：US10197440B2
公开(公告)日：2019-02-05
申请号：US16012520
申请日：2018-06-19
Applicant: PsiQuantum Corp
Inventor： Faraz Najafi
IPC: G01J1/42 , H01L39/22 , H01L31/113
Abstract: The various embodiments described herein include methods, devices, and systems for fabricating and operating niobium-germanium-based superconducting devices. In one aspect, a device includes a superconducting nanowire composed of niobium-germanium, a protective layer configured to inhibit oxidation of the superconducting nanowire, and a current source configured to supply a current to the superconducting nanowire. In another aspect, a method of fabrication includes: (1) depositing a layer of niobium-germanium on a substrate; (2) removing one or more portions of the layer of niobium-germanium to define one or more nanowires; and (3) depositing a protective layer over the one or more nanowires, the protective layer adapted to inhibit oxidation of niobium-germanium in the one or more nanowires.
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公开(公告)号：US12199604B1
公开(公告)日：2025-01-14
申请号：US18099861
申请日：2023-01-20
Applicant: PsiQuantum Corp
Inventor： Faraz Najafi , Qiaodan Jin Stone
Abstract: The various embodiments described herein include methods, devices, and circuits for reducing switch transition time of superconductor switches. In some embodiments, an electrical circuit includes: (i) an input component configured to generate heat in response to an electrical input; and (ii) a first superconducting component thermally-coupled to the input component. The electrical circuit is configured such that, in the absence of the electrical input, at least a portion of the first superconducting component is maintained in a non-superconducting state in the absence of the electrical input; and, in response to the electrical input, the first superconducting component transitions to a superconducting state.
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Patent Agency Ranking
公开(公告)号：US12107375B2
公开(公告)日：2024-10-01
申请号：US17461892
申请日：2021-08-30
Applicant: PsiQuantum Corp.
Inventor： Faraz Najafi , Qiaodan Jin Stone
CPC classification number: H01R4/68 , G01J5/00 , H01B12/14 , H03K19/195 , H10N60/30 , H10N60/85 , H10N69/00
Abstract: 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
Applicant: PsiQuantum Corp.
Inventor： Faraz Najafi
IPC: H03K19/195 , H01L23/552 , H01L31/02 , H03K19/20 , H03K19/23 , H10N60/12 , H10N60/30 , H10N60/35 , H10N69/00
CPC classification number: H03K19/195 , H01L23/552 , H01L31/02027 , H03K19/1954 , H03K19/1958 , H03K19/20 , H03K19/23 , H10N60/124 , H10N60/30 , H10N69/00 , H10N60/35
Abstract: 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：US12061114B2
公开(公告)日：2024-08-13
申请号：US17967773
申请日：2022-10-17
Applicant: PsiQuantum Corp.
Inventor： Mark Thompson , Faraz Najafi
CPC classification number: G01J1/44 , G01J1/0407 , G02B6/4202 , H10N60/84 , G01J2001/442
Abstract: The various embodiments described herein include methods, devices, and systems for fabricating and operating superconducting photon detectors. In one aspect, a photon detector includes: (1) a first waveguide configured to guide photons from a photon source; (2) a second waveguide that is distinct and separate from the first waveguide and optically-coupled to the first waveguide; and (3) a superconducting component positioned adjacent to the second waveguide and configured to detect photons within the second waveguide.
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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
Applicant: PsiQuantum Corp.
Inventor： Faraz Najafi , Syrus Ziai
IPC: H10N60/83 , H01L29/861 , B32B17/10 , B32B37/26 , H01L21/683 , H01L23/24 , H01L27/12 , H10N60/01 , H10N60/20 , H10N60/30 , H10N60/82
CPC classification number: 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
Abstract: 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：US20230175887A1
公开(公告)日：2023-06-08
申请号：US18103413
申请日：2023-01-30
Applicant: PsiQuantum Corp.
Inventor： Faraz Najafi , Eric Dudley , Mark Thompson
CPC classification number: G01J1/44 , G01J1/0407 , G01J2001/4446
Abstract: A method of resolving a number of photons received by a photon detector includes optically coupling a waveguide to a superconducting wire having alternating narrow and wide portions; electrically coupling the superconducting wire to a current source; and electrically coupling an electrical contact in parallel with the superconducting wire. The electrical contact has a resistance less than a resistance of the superconducting wire while at least one narrow portion of the superconducting wire is in a non-superconducting state. The method includes providing to the superconducting wire, from the current source, a current configured to maintain the superconducting wire in a superconducting state in the absence of incident photons; receiving one or more photons via the waveguide; measuring an electrical property of the superconducting wire, proportional to a number of photons incident on the superconducting wire; and determining the number of received photons based on the electrical property.
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