-
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.
-
公开(公告)号：US11789205B1
公开(公告)日：2023-10-17
申请号：US17843802
申请日：2022-06-17
Applicant: PSIQUANTUM CORP. , UNIVERSITY OF BRISTOL
Inventor： Damien Bonneau , Mark Thompson
CPC classification number: G02B6/2861 , G02B6/262 , H01P9/00
Abstract: An optical device includes a first multi-mode waveguide, a first optical coupler coupled to the first multi-mode waveguide, the first coupler being tapered and curved, and a first single-mode waveguide having a first end coupled to the first optical coupler. The optical device maybe used in an optical delay device. A method of propagating light in a first multi-mode waveguide toward a first optical coupler, propagating the light in the first optical coupler toward a first single-mode waveguide, the first optical coupler being tapered and curved, and propagating the light along the first single-mode waveguide is also disclosed.
-
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.
-
公开(公告)号：US11635570B1
公开(公告)日：2023-04-25
申请号：US16741646
申请日：2020-01-13
Applicant: PSIQUANTUM CORP.
Inventor： Mark Thompson
Abstract: An optical delay device includes a multi-mode waveguide for propagating first light through at least a portion of the multi-mode waveguide. The multi-mode waveguide has a first width. The optical delay device also includes a first waveguide having a second width that is less than the first width and a first coupler connected to the multi-mode waveguide and the first waveguide for coupling the first light from the multi-mode waveguide to the first waveguide. The first waveguide includes a first portion connected to the first coupler for receiving the first light from the first coupler; and a second portion connected to the first portion for receiving the first light from the first portion and positioned adjacent to the multi-mode waveguide for coupling of the first light to the multi-mode waveguide as second light so that the second light propagates through at least the portion of the multi-mode waveguide.
-
公开(公告)号：US11629995B2
公开(公告)日：2023-04-18
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.
-
Patent Agency Ranking
公开(公告)号：US11543587B2
公开(公告)日：2023-01-03
申请号：US17345724
申请日：2021-06-11
Applicant: Psiquantum, Corp.
Inventor： Koustuban Ravi , Mark Thompson , Eric Dudley
Abstract: A Mach-Zehnder interferometer (MZI) filter comprising one or more passive compensation structures are described. The passive compensation structures yield MZI filters that are intrinsically tolerant to perturbations in waveguide dimensions and/or other ambient conditions. The use of n+1 waveguide widths can mitigate n different sources of perturbation to the filter. The use of at least three different waveguide widths for each Mach-Zehnder waveguide can alleviate sensitivity of filter performance to random width or temperature variations. A tolerance compensation portion is positioned between a first coupler section and a second coupler section, wherein the tolerance compensation portion includes a first compensation section having a second width, a second compensation section having a third width and a third compensation section having a fourth width, wherein the fourth width is greater than the third width and the third width is greater than the second width.
-
公开(公告)号：US11441941B2
公开(公告)日：2022-09-13
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
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：US20210190584A1
公开(公告)日：2021-06-24
申请号：US16985137
申请日：2020-08-04
Applicant: PsiQuantum Corp.
Inventor： Mark Thompson , Faraz Najafi
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.
-
公开(公告)号：US20200333179A1
公开(公告)日：2020-10-22
申请号：US16849829
申请日：2020-04-15
Applicant: PsiQuantum Corp,
Inventor： Chia-Jung Chung , Faraz Najafi , George Kovall , Vitor R. Manfrinato , Vimal Kamineni , Mark Thompson , Syrus Ziai
Abstract: A superconductor device according to some embodiments comprises a superconductor stack, which includes a superconductor layer and a silicon cap layer over the superconductor layer, the cap layer including amorphous silicon. The superconductor device further comprises a metal contact over a portion of the silicon cap layer and electrically-coupled to the superconductor layer. The metal contact comprises a core including a first metal, and an outer layer around the core that includes a second metal. The portion of the silicon cap layer is converted from silicon to a conductive compound including the second metal to provide low-resistance electrical coupling between the superconductor layer and the metal contact. The superconductor device further comprises a waveguide, and the first portion of the cap layer under the metal contact is at a sufficient lateral distance from the waveguide to prevent optical coupling between the metal contact and the waveguide.
-
公开(公告)号：US10247969B1
公开(公告)日：2019-04-02
申请号：US16015097
申请日：2018-06-21
Applicant: PsiQuantum Corp.
Inventor： Damien Bonneau , Mark Thompson , Syrus Ziai
Abstract: A photon source device includes a substrate and a first waveguide arranged on the substrate. The first waveguide is coupled with a first pair of reflectors defining a first resonant cavity in the first waveguide. The first resonant cavity is configured for outputting a first output wavelength and a second output wavelength. The first pair of reflectors include a partial reflector for the first output wavelength and a partial reflector for the second output wavelength. The photon source device further includes a second pair of reflectors defining a second resonant cavity that intersects with the first resonant cavity. The second resonant cavity is configured for receiving an input wavelength distinct from the first and the second output wavelengths. A first reflector and a second reflector of the second pair of reflectors have a first reflectance and a second reflectance for the input wavelength, respectively.
-
-
-
-
-
-
-
-
-
Search Results
40
records
(took 0.02 seconds)
