公开(公告)号：US11811394B2

公开(公告)日：2023-11-07

申请号：US17838917

申请日：2022-06-13

Applicant: PsiQuantum Corp.

Inventor： Faraz Najafi ,  Qiaodan Jin Stone

IPC: H03K19/195 ,  G01J1/44 ,  H10N60/30 ,  H10N60/84

CPC classification number: H03K19/195 ,  G01J1/44 ,  H10N60/30 ,  H10N60/84 ,  G01J2001/442

Abstract: A programmable circuit includes a superconducting component arranged in a multi-dimensional array of alternating narrow and wide portions. The programmable circuit further includes a plurality of heat sources, each heat source configured to selectively provide heat to a respective narrow portion sufficient to transition the respective narrow portion from a superconducting state to a non-superconducting state. The programmable circuit further includes a plurality of electrical terminals, each electrical terminal coupled to a respective wide portion of the multi-dimensional array.

公开(公告)号：US20230253967A1

公开(公告)日：2023-08-10

申请号：US18127530

申请日：2023-03-28

Applicant: PsiQuantum Corp.

Inventor： Faraz Najafi

IPC: H03K19/195 ,  H10N60/30 ,  H10N60/12 ,  H10N69/00 ,  H01L23/552 ,  H03K19/20 ,  H01L31/02 ,  H03K19/23

CPC classification number: H03K19/195 ,  H03K19/1954 ,  H10N60/30 ,  H10N60/124 ,  H10N69/00 ,  H01L23/552 ,  H03K19/1958 ,  H03K19/20 ,  H01L31/02027 ,  H03K19/23 ,  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.

公开(公告)号：US11719653B1

公开(公告)日：2023-08-08

申请号：US16575282

申请日：2019-09-18

Applicant: PsiQuantum Corp.

Inventor： Faraz Najafi ,  Chia-Jung Chung

IPC: H01L39/24 ,  G01N23/207

CPC classification number: G01N23/2076 ,  H01L39/2435 ,  H01L39/2438

Abstract: The various embodiments described herein include methods for manufacturing superconductor devices. In some embodiments, a method of manufacturing a superconductor includes: (1) manufacturing a first superconductor device; (2) characterizing the first superconductor device, including: (a) obtaining x-ray diffraction spectra of the first superconductor device; and (b) identifying a ratio of a first cubic phase peak to a second cubic phase peak in the x-ray diffraction spectra; (3) adjusting a manufacturing parameter based on the identified ratio; and (4) manufacturing a second superconductor device with the adjusted manufacturing parameter.

公开(公告)号：US20220129779A1

公开(公告)日：2022-04-28

申请号：US17488203

申请日：2021-09-28

Applicant: PsiQuantum Corp.

Inventor： Brad A.J. Moores ,  Faraz Najafi

IPC: G06N10/00

Abstract: A circuit includes a resonant circuit and a detection circuit. The detection circuit includes a superconducting component coupled with the resonant circuit, and an impedance component coupled to the superconducting component. The superconducting component is configured to receive an input current. The superconducting component is configured to carry a first current that has a current density that is less than a threshold current density, while the first resonant circuit is in the first state, and carry a second current that has a current density that exceeds the threshold current density while the first resonant circuit is in the second state, thereby transitioning the superconducting component to a non-superconducting state while the resonant circuit is in the second state. A method of operating the detection circuit is also described herein.

公开(公告)号：US20220014203A1

公开(公告)日：2022-01-13

申请号：US17486615

申请日：2021-09-27

Applicant: PsiQuantum Corp.

Inventor： Faraz Najafi

IPC: H03K19/195 ,  H01L23/552 ,  H01L27/18 ,  H01L39/16 ,  H01L39/22 ,  H03K19/20 ,  H01L31/02 ,  H03K19/23

Abstract: An electric circuit includes a plurality of superconducting components, each of the plurality of superconducting components having: a respective first terminal; a respective second terminal; and a respective input. The electric circuit further includes 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 bias current adapted to cause the electric circuit to function as a logical OR gate on the respective inputs of the plurality of superconducting components. The electric circuit further includes an output node adapted to output a state of the logical OR gate.

公开(公告)号：US20210351778A1

公开(公告)日：2021-11-11

申请号：US17135861

申请日：2020-12-28

Applicant: PsiQuantum Corp.

Inventor： Faraz Najafi ,  Qiaodan Jin Stone

IPC: H03K19/195 ,  G01J1/44 ,  H01L39/10 ,  H01L39/16

Abstract: A programmable circuit includes a superconducting component arranged in a multi-dimensional array of alternating narrow and wide portions. The programmable circuit further includes a plurality of heat sources, each heat source configured to selectively provide heat to a respective narrow portion sufficient to transition the respective narrow portion from a superconducting state to a non-superconducting state. The programmable circuit further includes a plurality of electrical terminals, each electrical terminal coupled to a respective wide portion of the multi-dimensional array.

公开(公告)号：US20210239518A1

公开(公告)日：2021-08-05

申请号：US17232086

申请日：2021-04-15

Applicant: PsiQuantum Corp,

Inventor： Chia-Jung Chung ,  Faraz Najafi ,  George Kovall ,  Vitor R. Manfrinato ,  Vimal Kamineni ,  Mark Thompson ,  Syrus Ziai

IPC: G01J1/02 ,  G01J1/44 ,  H01B12/06

Abstract: A superconductor device is manufactured by depositing a barrier layer over a substrate including silicon, the barrier layer including silicon and nitrogen; depositing a seed layer for a superconductor layer over the barrier layer, the seed layer including aluminum and nitrogen; depositing the superconductor layer over the seed layer, the superconductor layer including a layer of a superconductor material, the barrier layer serving as an oxidation barrier between the layer superconductor material and the substrate; and depositing a silicon cap layer over the superconductor layer. In some embodiments, the superconductor device includes a waveguide and a metal contact at a sufficient distance from the waveguide to prevent optical coupling between the metal contact and the waveguide.

公开(公告)号：US20210183767A1

公开(公告)日：2021-06-17

申请号：US16575274

申请日：2019-09-18

Applicant: PsiQuantum Corp.

Inventor： Faraz Najafi ,  Vitor Riseti Manfrinato

IPC: H01L23/528 ,  H01L39/08 ,  H01L27/18

Abstract: The various embodiments described herein include methods, devices, and circuits for reducing or minimizing current crowding effects in manufactured superconductors. In some embodiments, a superconducting circuit includes: (1) a first component having a first connection point, the first connection point having a first width; (2) a second component having a second connection point, the second connection point having a second width that is larger than the first width; and (3) a connector electrically connecting the first connection point and the second connection point, the connector including: (a) a first taper having a first slope and a non-linear shape; (b) a second taper having a second slope; and (c) a connecting portion connecting the first taper to the second taper, the connecting portion having a third slope that is less than the first slope and less than the second slope.

公开(公告)号：US20210152179A1

公开(公告)日：2021-05-20

申请号：US17160283

申请日：2021-01-27

Applicant: PsiQuantum Corp.

Inventor： Faraz Najafi

IPC: H03K19/195 ,  H03K19/17784 ,  H03K19/17736 ,  H03K19/17728

Abstract: The various embodiments described herein include methods, devices, and systems for operating superconducting circuitry. In one aspect, a programmable circuit includes: (1) a superconducting component arranged in a multi-dimensional array of alternating narrow and wide portions, the superconducting component having an input terminal at a first end and an output terminal at a second end opposite of the first end; and (2) control circuitry coupled to the narrow portions of the superconducting component, the control circuitry configured to transition the narrow portions between superconducting and non-superconducting states. In some implementations, the superconducting component and the control circuitry are formed on different layers of the programmable circuit.

公开(公告)号：US10972104B2

公开(公告)日：2021-04-06

申请号：US16473547

申请日：2019-02-12

Applicant: PSIQUANTUM CORP.

Inventor： Faraz Najafi ,  Qiaodan Jin Stone

IPC: H03K19/195 ,  G01J1/44 ,  H01L39/10 ,  H01L39/16

Abstract: The various embodiments described herein include methods, devices, and systems for operating superconducting circuitry. In one aspect, a superconducting component includes: (1) a superconductor having a plurality of alternating narrow and wide portions, each wide portion having a corresponding terminal; and (2) a plurality of heat sources, each heat source thermally coupled to a corresponding narrow portion such that heat from the heat source is transmitted to the corresponding narrow portion; where the plurality of heat sources is electrically isolated from the superconductor.