公开(公告)号：US12066661B2

公开(公告)日：2024-08-20

申请号：US18370785

申请日：2023-09-20

Applicant: PsiQuantum, Corp. ,  The University of Bristol

Inventor： Damien Bonneau ,  Mark Thompson

IPC: G02B6/28 ,  G02B6/26 ,  H01P9/00

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 may be 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：US11714329B1

公开(公告)日：2023-08-01

申请号：US17694475

申请日：2022-03-14

Applicant: PSIQUANTUM CORP.

Inventor： Mark Thompson

IPC: G02F1/21 ,  G02B6/122 ,  G02B6/125 ,  G02B6/28 ,  G02F1/313 ,  G02B6/12 ,  G02F1/225

CPC classification number: G02F1/212 ,  G02B6/12002 ,  G02B6/125 ,  G02B6/1228 ,  G02B6/2821 ,  G02F1/225 ,  G02F1/3132 ,  G02F1/3133 ,  G02F1/3135 ,  G02B2006/1209

Abstract: An optical coupler includes a first waveguide including a first multi-mode waveguide section having a cross-section characterized by a first height and a first width that is greater than the first height and a second waveguide including a second multi-mode waveguide section having a cross-section characterized by a second height and a second width that is greater than the second height. The first multi-mode waveguide section is positioned adjacent to the second multi-mode waveguide section at least partially above or below the second multi-mode waveguide so that light entering the first multi-mode waveguide section is coupled from the first multi-mode waveguide section to the second multi-mode waveguide section. Methods for coupling light between waveguides with the optical coupler and optical devices that include the optical coupler are also described.

公开(公告)号：US20230213380A1

公开(公告)日：2023-07-06

申请号：US17967773

申请日：2022-10-17

Applicant: PsiQuantum Corp.

Inventor： Mark Thompson ,  Faraz Najafi

IPC: G01J1/04 ,  G01J1/44

CPC classification number: G01J1/0407 ,  G01J1/44 ,  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：US11658254B2

公开(公告)日：2023-05-23

申请号：US17688769

申请日：2022-03-07

Applicant: PSIQUANTUM CORP.

Inventor： Faraz Najafi ,  Mark Thompson ,  Damien Bonneau ,  Joaquin Matres Abril

IPC: H01L31/0352 ,  H01L31/18 ,  H01L31/0232 ,  H01L31/109 ,  H01L39/24 ,  G01J1/42 ,  H01L39/10 ,  G01J1/44

CPC classification number: H01L31/035227 ,  G01J1/42 ,  G01J1/44 ,  H01L31/02327 ,  H01L31/109 ,  H01L31/18 ,  H01L39/10 ,  H01L39/24 ,  H01L39/2416 ,  G01J2001/442

Abstract: A device includes a first semiconductor layer; a portion of a second semiconductor layer disposed on the first semiconductor layer; and a third semiconductor layer including a first region disposed on the portion of the second semiconductor layer and a second region disposed on the first semiconductor layer. A thickness of the first region is less than a predefined thickness. The device also includes an etch stop layer disposed on the third semiconductor layer; a plurality of distinct portions of a fourth semiconductor layer disposed on the etch stop layer and exposing one or more distinct portions of the etch stop layer over the portion of the second semiconductor layer; and a plurality of distinct portions of a superconducting layer disposed on the plurality of distinct portions of the fourth semiconductor layer and the exposed one or more distinct portions of the etch stop layer.

公开(公告)号：US11473974B2

公开(公告)日：2022-10-18

申请号：US16985137

申请日：2020-08-04

Applicant: PsiQuantum Corp.

Inventor： Mark Thompson ,  Faraz Najafi

IPC: G01J1/44 ,  G01J1/04 ,  G02B6/42 ,  H01L39/10

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：US11271125B2

公开(公告)日：2022-03-08

申请号：US16848662

申请日：2020-04-14

Applicant: PSIQUANTUM CORP.

Inventor： Faraz Najafi ,  Mark Thompson ,  Damien Bonneau ,  Joaquin Matres Abril

IPC: H01L31/0352 ,  H01L31/18 ,  H01L31/0232 ,  H01L31/109 ,  H01L39/24 ,  G01J1/42 ,  H01L39/10 ,  G01J1/44

Abstract: A device includes a first semiconductor layer; a portion of a second semiconductor layer disposed on the first semiconductor layer; and a third semiconductor layer including a first region disposed on the portion of the second semiconductor layer and a second region disposed on the first semiconductor layer. A thickness of the first region is less than a predefined thickness. The device also includes an etch stop layer disposed on the third semiconductor layer; a plurality of distinct portions of a fourth semiconductor layer disposed on the etch stop layer and exposing one or more distinct portions of the etch stop layer over the portion of the second semiconductor layer; and a plurality of distinct portions of a superconducting layer disposed on the plurality of distinct portions of the fourth semiconductor layer and the exposed one or more distinct portions of the etch stop layer.

公开(公告)号：US11048041B2

公开(公告)日：2021-06-29

申请号：US16599526

申请日：2019-10-11

Applicant: Psiquantum, Corp.

Inventor： Koustuban Ravi ,  Mark Thompson ,  Eric Dudley

IPC: G02B6/293 ,  G02B6/12 ,  G02B6/122 ,  G02B6/13

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：US11009387B2

公开(公告)日：2021-05-18

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

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

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：US10651325B2

公开(公告)日：2020-05-12

申请号：US16228441

申请日：2018-12-20

Applicant: PsiQuantum Corp.

Inventor： Faraz Najafi ,  Mark Thompson ,  Damien Bonneau ,  Joaquin Matres Abril

IPC: H01L31/0352 ,  H01L31/18 ,  H01L31/0232 ,  H01L31/109 ,  H01L39/24 ,  G01J1/42 ,  H01L39/10 ,  G01J1/44

Abstract: A device includes a first semiconductor layer; a portion of a second semiconductor layer disposed on the first semiconductor layer; and a third semiconductor layer including a first region disposed on the portion of the second semiconductor layer and a second region disposed on the first semiconductor layer. A thickness of the first region is less than a predefined thickness. The device also includes an etch stop layer disposed on the third semiconductor layer; a plurality of distinct portions of a fourth semiconductor layer disposed on the etch stop layer and exposing one or more distinct portions of the etch stop layer over the portion of the second semiconductor layer; and a plurality of distinct portions of a superconducting layer disposed on the plurality of distinct portions of the fourth semiconductor layer and the exposed one or more distinct portions of the etch stop layer.

公开(公告)号：US20240402429A1

公开(公告)日：2024-12-05

申请号：US18773408

申请日：2024-07-15

Applicant: PsiQuantum, Corp. ,  The University of Bristol

Inventor： Damien Bonneau ,  Mark Thompson

IPC: G02B6/28 ,  G02B6/26 ,  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.