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公开(公告)号：US20240168906A1
公开(公告)日：2024-05-23
申请号：US18108552
申请日：2023-02-10
Applicant: Psiquantum, Corp.
Inventor： Daniel Litinski
CPC classification number: G06F13/4022 , G06N10/40
Abstract: A fault-tolerant quantum computer using topological codes such as surface codes can have an architecture that reduces the amount of idle volume generated. The architecture can include qubit modules that generate surface code patches for different qubits and a network of interconnections between different qubit modules. The interconnections can include “port” connections that selectably enable coupling of boundaries of surface code patches generated in different qubit modules and/or “quickswap” connections that selectably enable transferring the state of a surface code patch from one qubit module to another. Port and/or quickswap connections can be made between a subset of qubit modules. For instance port connections can connect a given qubit module to other qubit modules within a fixed range. Quickswap connections can provide a log-tree network of direct connections between qubit modules.
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公开(公告)号：US11988554B2
公开(公告)日：2024-05-21
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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公开(公告)号：US11980105B2
公开(公告)日：2024-05-07
申请号：US17240965
申请日：2021-04-26
Applicant: PsiQuantum Corp. , Government of the United States of America, as Represented by the Secretary of Commerce
Inventor： Faraz Najafi , Qiaodan Jin Stone , Adam Nykoruk McCaughan
Abstract: The various embodiments described herein include methods, devices, and systems for operating superconducting circuits. In one aspect, an electric circuit includes: (1) a superconductor component having a first terminal at a first end and a second terminal at a second end; (2) a gate component thermally-coupled to the superconductor component at a first location between the first terminal and the second terminal, where the gate component is thermally-coupled via a first section of the gate component; and where the gate component has a smallest width at the first section so as to focus resistive heating toward the superconductor component.
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公开(公告)号：US20240134248A1
公开(公告)日：2024-04-25
申请号：US18383415
申请日：2023-10-23
Applicant: Psiquantum, Corp.
Inventor： Mihai Dorian Vidrighin , Dylan Saunders
CPC classification number: G02F1/3526 , G02F1/3536 , G02F1/365 , G02F2201/06
Abstract: A frequency conversion system includes a bus waveguide, a first pump laser coupled to the bus waveguide and characterized by a first frequency, a second pump laser coupled to the bus waveguide and characterized by a second frequency, an input light combining device coupled to the bus waveguide and configured to combine light from the first pump laser and the second pump laser to produce a combined light, and a plurality of optical resonators coupled to the bus waveguide. Each optical resonator of the plurality of optical resonators has a respective resonance line width, wherein for each optical resonators of the plurality the respective resonance line width overlaps with a resonance line width of at least one adjacent optical resonator of the plurality of optical resonators, and wherein each optical resonator of the plurality is configured to generate output light at a converted frequency via frequency mixing.
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公开(公告)号：US20240134243A1
公开(公告)日：2024-04-25
申请号：US18384802
申请日：2023-10-26
Applicant: Psiquantum, Corp.
Inventor： Chia-Ming Chang , Hung-Hsi Lin , Gary Gibson
IPC: G02F1/225
CPC classification number: G02F1/2257 , G02F1/212 , G02F2203/50
Abstract: A waveguide structure includes a substrate and a waveguide core coupled to the substrate and including a first material characterized by a first index of refraction and a first electro-optic coefficient. The waveguide structure also includes a first cladding layer at least partially surrounding the waveguide core and including a second material characterized by a second index of refraction less than the first index of refraction and a second electro-optic coefficient greater than the first electro-optic coefficient. The second cladding layer is coupled to the first cladding layer.
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Patent Agency Ranking
公开(公告)号：US11841559B2
公开(公告)日：2023-12-12
申请号：US18112415
申请日：2023-02-21
Applicant: Psiquantum, Corp.
Inventor： Chia-Ming Chang , Hung-Hsi Lin , Gary Gibson
CPC classification number: G02F1/2257 , G02F1/212 , G02F2203/50
Abstract: An optical switch structure includes at least one optical input port and at least one optical output port. The optical switch structure also includes an optical waveguide structure including a waveguide core and a waveguide cladding The optical waveguide structure is optically coupled to the at least one optical input port and the at least one optical output port. The waveguide core includes a first material characterized by a first index of refraction and a first electro-optic coefficient and the waveguide cladding includes a second material characterized by a second index of refraction less than the first index of refraction and a second electro-optic coefficient greater than the first electro-optic coefficient.
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公开(公告)号：US11829049B2
公开(公告)日：2023-11-28
申请号：US17875256
申请日：2022-07-27
Applicant: Psiquantum, Corp.
Inventor： Mihai Dorian Vidrighin , Dylan Saunders
CPC classification number: G02F1/3526 , G02F1/3536 , G02F1/365 , G02F2201/06
Abstract: A photon source includes a bus waveguide, a photon source pump laser coupled to the bus waveguide and a plurality of optical resonators coupled to the bus waveguide. Each optical resonator of the plurality of optical resonators has a respective resonance line width and a respective resonance frequency, wherein a bandwidth of the resonant center frequencies of the plurality of optical resonators is greater than a bandwidth of the photon source pump laser. The bus waveguide produces photons in response to receiving laser pulses from the pump laser.
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公开(公告)号：US11817400B2
公开(公告)日：2023-11-14
申请号：US17377131
申请日：2021-07-15
Applicant: Psiquantum, Corp.
Inventor： Yong Liang , Vimal Kumar Kamineni , Chia-Ming Chang , James McMahon
CPC classification number: H01L23/562 , H01L21/02186 , H01L27/1203
Abstract: In some embodiments method comprises depositing a ferroelectric layer on a top surface of a semiconductor wafer and forming one or more gaps in the ferroelectric layer. The one or more gaps can be formed on a repetitive spacing to relieve stresses between the ferroelectric layer and the semiconductor wafer. A first dielectric layer is deposited over the ferroelectric layer and the first dielectric layer is planarized to fill in the gaps. A second dielectric layer is formed between the ferroelectric layer and the semiconductor wafer. The second dielectric layer can be formed by annealing the wafer in an oxidizing atmosphere such that an upper portion of the semiconductor substrate forms an oxide layer between the semiconductor substrate and the ferroelectric layer.
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公开(公告)号：US11793090B1
公开(公告)日：2023-10-17
申请号：US17826088
申请日：2022-05-26
Applicant: PsiQuantum Corp.
Inventor： Faraz Najafi
Abstract: An electronic component having an asymmetric impedance is provided. The component includes first, second and third branches that connect at a common node. The component includes a first portion of superconducting material disposed along the first branch and a second portion of superconducting material disposed along the second branch. The component includes a first device disposed along the first branch and configured to transition the second portion of the superconducting material to a non-superconducting state when a current between a first terminal of the first device and a second terminal of the first device exceeds a first threshold value and a second device disposed along the second branch and configured to transition the first portion of the superconducting material to a non-superconducting state when a current between a first terminal of the second device and a second terminal of the second device exceeds a second threshold value.
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公开(公告)号：US20230243674A1
公开(公告)日：2023-08-03
申请号：US18033274
申请日：2021-10-21
Applicant: Psiquantum, Corp.
Inventor： Mercedes Gimeno-Segovia
CPC classification number: G01D5/2492 , G02B6/12004 , G01D5/2497 , G06N10/40
Abstract: A temporal multiplexing circuit can include a set of waveguides having different delay lengths, with the waveguides arranged according to a de Bruijn sequence. The set of waveguides can be coupled to a cyclic switch that selectably delivers a group of unsynchronized photons (or other signal pulses) from a contiguous group of input paths into a contiguous group of the delay waveguides. Similarly, a spatial multiplexing circuit can include a set of pairs of waveguides that each implement mode swapping of photons, with different swap distances, with the pairs of waveguides arranged according to a de Bruijn sequence. The set of waveguides can be coupled to a cyclic switch that selectably delivers a group of photons from a set of input paths into a contiguous group of the mode-swap waveguides. Temporal and spatial multiplexing can be combined in a switching network.
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