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公开(公告)号：US12099146B2
公开(公告)日：2024-09-24
申请号：US18308259
申请日：2023-04-27
Applicant: TRUPIXEL INC.
Inventor： Myung-Jae Lee , Do Kyung Hwang
IPC: G01S7/4863 , G01J1/44 , G01S17/931
CPC classification number: G01S7/4863 , G01J1/44 , G01S17/931 , G01J2001/442 , G01J2001/4446
Abstract: Disclosed is a single photon detector comprising a semiconductor substrate and a 2D material layer provided adjacent to the semiconductor substrate, the semiconductor substrate includes a first well having a first conductivity type, a heavily doped region having a second conductivity type different from the first conductivity type, and a depletion region provided between the first well and the heavily doped region.
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公开(公告)号：US12072605B2
公开(公告)日：2024-08-27
申请号：US17955446
申请日：2022-09-28
Applicant: ORCA Computing Limited
Inventor： Richard Murray , Joshua Nunn , Robert Francis-Jones , Tom Parker , Krzysztof Kaczmarek
CPC classification number: G02F1/3526 , G01J1/44 , G02F1/3507 , G11C13/04 , G11C13/048 , H04B10/70 , G01J2001/442
Abstract: An apparatus is disclosed herein. The apparatus comprises a non-linear photonic element for outputting a signal and idler photon pair. The apparatus further comprises a module configured to, based on receiving one or more control signals, controllably store photons and controllably output stored photons. The apparatus further comprises a detector arrangement comprising one or more detectors for detecting light. The module is further configured to receive at least one of the signal and idler photons of the pair. The module is further configured to at least partially store one of the signal or idler photons of the pair. The module is further configured to output the said at least partially stored signal or idler photon along an optical path towards the at least one detectors. The apparatus is configured to direct the other of the signal or idler photon towards the detector arrangement.
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公开(公告)号：US20240214078A1
公开(公告)日：2024-06-27
申请号：US18538154
申请日：2023-12-13
Applicant: Xanadu Quantum Technologies Inc.
Inventor： Yanbing Zhang , Jannat Hundal , Leonhard Neuhaus , Lukas Helt
CPC classification number: H04B10/70 , G01J1/42 , G06N10/60 , H04Q11/0062 , G01J2001/442
Abstract: Systems, methods and computer program products for real-time routing of optical signals. A signal trace is received by a signal processor from a photon-number resolving detector. The signal trace is produced by the photon-number resolving detector in response to an optical pulse from a light source (e.g. a pulsed laser). The signal processor determines the photon number of the optical pulse by applying a function to the signal trace and one or more reference traces. A feedback signal is then defined based on the photon number of the optical pulse. The feedback signal is used to control the operation of a switch positioned in the path of a related optical signal. The switch operates to define the forward routing path of the related optical signal.
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84.发明授权公开(公告)号：US12015700B2
公开(公告)日：2024-06-18
申请号：US16952499
申请日：2020-11-19
Applicant: The MITRE Corporation
Inventor： Daniel T. Stack , Stephen P. Pappas , Brandon V. Rodenburg , Colin P. Lualdi
CPC classification number: H04L9/0852 , G01J1/0429 , H04L63/1475 , G01J2001/442
Abstract: A quantum cryptography apparatus and system includes a photon emitter, a photon receiver, a first photodetector, a second photodetector, a first polarization optic, and a second polarization optic. The photon emitter is configured to emit a photon at a wavelength. The photon receiver is coupled to the photon emitter by at least one quantum channel. The photon receiver includes the first polarization optic configured to output the emitted photon in a polarization state. The first photodetector is configured to detect the emitted photon from the output of the first polarization optic. The second photodetector is configured to detect a backflash from the first photodetector. The second polarization optic is between the first photodetector and the second photodetector. The second photodetector and the second polarization optic are configured to internally calibrate the photon receiver.
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公开(公告)号：US20240192052A1
公开(公告)日：2024-06-13
申请号：US18286909
申请日：2022-05-13
Inventor： Anton VETLUGIN , Cesare SOCI , Nikolay Ivanovich ZHELUDEV
CPC classification number: G01J1/44 , G01J1/0425 , G01J1/4228 , G01J2001/442
Abstract: According to embodiments of the present invention, a method of detecting photons is provided. The method includes arranging a plurality of light absorbing elements to interact with an electromagnetic standing wave at a corresponding plurality of points of the electromagnetic standing wave to absorb at least part of the electromagnetic standing wave, the plurality of light absorbing elements being spaced apart from each other, and detecting electrical signals generated in response to the absorption to detect photons corresponding to the electromagnetic standing wave. According to further embodiments of the present invention, a photon detector arrangement is also provided.
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Patent Agency Ranking
公开(公告)号：US20240183709A1
公开(公告)日：2024-06-06
申请号：US18287829
申请日：2022-04-20
Inventor： Shu-Wei HUANG , Bowen LI
CPC classification number: G01J1/44 , G01J3/1895 , G01J3/2803 , G01J2001/442
Abstract: A time-to-frequency converter transforms an initial single-photon pulse into a transformed pulse such that the temporal waveform of the initial pulse is mapped to the spectrum of the transformed pulse. The time-to-frequency converter includes a dispersive optical element followed by a time lens. The spectrum of the transformed pulse is then measured to determine the arrival time of the initial pulse. The spectrum can be measured using a photon-counting spectrometer that spatially disperses the transformed pulse onto an single-photon detector array. Alternatively. an additional dispersive element can be used with the time-to-frequency converter to implement a time magnifier. The arrival time of the resulting time-magnified pulse can then be measured using time-correlated single-photon counting. This arrival time can then be divided by the magnification factor of the time magnifier to obtain the arrival time of the initial pulsc.
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公开(公告)号：US11994428B1
公开(公告)日：2024-05-28
申请号：US18110851
申请日：2023-02-16
Applicant: PsiQuantum Corp.
Inventor： Faraz Najafi
CPC classification number: G01J1/44 , G01J1/0407 , H03K17/941 , G01J2001/442 , G01J2001/4446
Abstract: A photon detecting component is provided. The photon detecting component includes a first waveguide and a detecting section. The detecting section includes a second waveguide; a detector, optically coupled with the second waveguide, configured to detect one or more photons in the second waveguide; an optical switch configured to provide an optical coupling between the first waveguide and the second waveguide when the detector is operational; and an electrical switch electrically coupled to the detector, wherein the electrical switch is configured to change state in response to the detector detecting one or more photons. The photon detecting component further includes readout circuitry configured to determine a state of the electrical switch of the detecting section.
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公开(公告)号：US11984934B2
公开(公告)日：2024-05-14
申请号：US17228719
申请日：2021-04-13
Applicant: NATIONAL UNIVERSITY OF DEFENSE TECHNOLOGY
Inventor： Xiaogang Qiang , Junjie Wu , Yizhi Wang
CPC classification number: H04B10/70 , G01J1/44 , G02F1/212 , G06N10/00 , G01J2001/442
Abstract: The present invention discloses an integrated photonic chip structure for universal quantum walk simulation which combines the multiphoton source that can generate the spatially entangled multi-photon state and the linear optical network that can implement the unitary transformation, and establishes mapping between on-chip spatial-entangled multi-photon state and quantum walk state and mapping between on-chip linear optical unitary transformation and the evolution process of multi-particle quantum walk. By manipulating the spatially entangled multi-photon state generated via the multi-photon sources and the optical unitary transformation implemented via the universal linear optical networks, the chip structure can implement universal quantum walk simulation with the control over all parameters of multiple-particle quantum walks including such as evolution Hamiltonian, evolution time, initial evolution state and particle properties (i.e., particle indistinguishability and particle exchange symmetry).
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公开(公告)号：US20240080029A1
公开(公告)日：2024-03-07
申请号：US18387402
申请日：2023-11-06
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 multi-dimensional array. The programmable circuit further includes a plurality of photon detectors coupled to respective portions of the superconducting multi-dimensional array, each photon detector configured to selectively provide input to a corresponding respective portion sufficient to transition the corresponding respective portion from a superconducting state to a non-superconducting state. The programmable circuit also includes one or more electrical terminals coupled to respective second portions of the superconducting multi-dimensional array.
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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.
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