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公开(公告)号：US20250087959A1
公开(公告)日：2025-03-13
申请号：US18957743
申请日：2024-11-23
Applicant: Psiquantum, Corp.
Inventor： Eric Dudley , Yong Liang , Faraz Najafi , Vimal Kamineni , Ann Melnichuk
Abstract: A device includes a substrate and a dielectric layer on the substrate. The device also includes a light sensitive component in the dielectric layer and a trench having a first portion disposed in the substrate and a second portion disposed in the dielectric layer. The trench is adjacent the light sensitive component and includes an adhesion layer in the first portion and the second portion, an optical isolation layer on the adhesion layer, and a first fill material in the first portion and a second fill material in the second portion. The first fill material is characterized by a first coefficient of thermal expansion (CTE) that matches a CTE of the substrate and the second fill material is characterized by a second CTE that matches a CTE of the dielectric layer.
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公开(公告)号：US12249641B1
公开(公告)日：2025-03-11
申请号：US18383009
申请日：2023-10-23
Applicant: PsiQuantum Corp
Inventor： Faraz Najafi , Qiaodan Jin Stone , Andrea Bahgat Shehata
IPC: H01L29/66 , H01L23/34 , H01L29/861 , H01L29/868 , H01L31/09 , H01L31/107 , H10N60/30 , H10N69/00
Abstract: The various embodiments described herein include methods, devices, and systems for fabricating and operating diodes. In one aspect, an electrical circuit includes: (1) a diode component having a particular energy band gap; (2) an electrical source electrically coupled to the diode component and configured to bias the diode component in a particular state; and (3) a heating component thermally coupled to a junction of the diode component and configured to selectively supply heat corresponding to the particular energy band gap.
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公开(公告)号：US12199039B2
公开(公告)日：2025-01-14
申请号：US18518394
申请日：2023-11-22
Applicant: PsiQuantum Corp.
Inventor： Faraz Najafi , Vitor Riseti Manfrinato
IPC: H01L23/528 , H10N60/83 , H10N69/00 , H01L23/532 , H10N60/84 , H10N60/85
Abstract: A superconducting circuit includes a photon detector component, a second component, and a multi-taper superconducting connector shaped to reduce current crowding, the superconducting connector electrically connecting the photon detector component and the second component. The multi-taper superconducting connector includes a first taper arranged adjacent the photon detector component and a second taper arranged adjacent the second component.
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公开(公告)号：US20240204784A1
公开(公告)日：2024-06-20
申请号：US18416806
申请日：2024-01-18
Applicant: PsiQuantum Corp.
Inventor： Faraz Najafi
IPC: H03K19/195 , H03K19/17728 , H03K19/17736 , H03K19/17784
CPC classification number: H03K19/195 , H03K19/17728 , H03K19/17744 , H03K19/17784
Abstract: The various embodiments described herein include methods, devices, and systems for operating superconducting circuitry. In one aspect, a programmable circuit includes a configurable superconducting component and control circuitry coupled to the configurable superconducting component. The superconducting component includes an input terminal, an output terminal, and a plurality of gate terminals. The control circuitry is coupled to the superconducting component via the plurality of gate terminals. The control circuitry is adapted to selectively transition portions of the superconducting component from a superconducting state to a non-superconducting state. The control circuitry is configured to operate the superconducting component in a first configuration in which the programmable circuit is configured to perform a first function. The control circuitry is further configured to operate the superconducting component in a second configuration in which the programmable circuit is configured to perform a second function, distinct from the first function.
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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
Applicant: PsiQuantum Corp.
Inventor： Faraz Najafi , Eric Dudley
CPC classification number: G01J1/44 , G01J1/4228 , G06N10/00 , H10N60/30 , H10N60/84 , H10N69/00 , G01J2001/442 , G01J2001/4473
Abstract: 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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Patent Agency Ranking
公开(公告)号：US11936380B2
公开(公告)日：2024-03-19
申请号：US18118040
申请日：2023-03-06
Applicant: PsiQuantum Corp.
Inventor： Faraz Najafi
IPC: H03K19/195 , H03K19/17728 , H03K19/17736 , H03K19/17784
CPC classification number: H03K19/195 , H03K19/17728 , H03K19/17744 , H03K19/17784
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.
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公开(公告)号：US20230123000A1
公开(公告)日：2023-04-20
申请号：US18082520
申请日：2022-12-15
Applicant: Psiquantum, Corp.
Inventor： Vimal Kumar Kamineni , Matteo Staffaroni , Faraz Najafi , Ann Melnichuk , George Kovall , Yong Liang
Abstract: A device includes a substrate, a dielectric layer on the substrate, a waveguide within the dielectric layer, and a photodetector optically coupled to the waveguide. The photodetector is disposed above the waveguide layer and is monolithically integrated with the substrate. The photodetector is configured to operate at low temperatures, such as below about 50 K or about 20 K. In some embodiments, the monolithic photonic device includes thermal isolation structures and optical isolation structures. Techniques for manufacturing the monolithic photonic device, including the thermal isolation structures and optical isolation structures, are also described.
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公开(公告)号：US11569816B1
公开(公告)日：2023-01-31
申请号：US16840182
申请日：2020-04-03
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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公开(公告)号：US20220214214A1
公开(公告)日：2022-07-07
申请号：US17705204
申请日：2022-03-25
Applicant: PsiQuantum Corp.
Inventor： Faraz Najafi , Eric Dudley , Mark Thompson
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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公开(公告)号：US11362664B2
公开(公告)日：2022-06-14
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.
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