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公开(公告)号：US12072277B2
公开(公告)日：2024-08-27
申请号：US17084683
申请日：2020-10-30
IPC分类号： G01N15/1434 , G01N15/1404
CPC分类号： G01N15/1436 , G01N15/1404
摘要： A multiplexed amplitude modulation photometer includes a microchannel; a first input light path that: receives a first modulated light at a first modulation frequency; and communicates the first modulated light to a first optical region that receives the first analyte that produces a first output light including the first modulation frequency communicated to a first detection light path; the first optical region; the first detection light path that receives the first output light; a second input light path that: receives a second modulated light with a second modulation frequency; and communicates second modulated light to a second optical region that receives the second analyte that produces a second output light with the second modulation frequency communicated to a second detection light path; the second optical region; and the second detection light path that receives the second output light from the second optical region.
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2.发明公开-
公开(公告)号：US20240235156A1
公开(公告)日：2024-07-11
申请号：US18408456
申请日：2024-01-09
发明人： Franklyn John Quinlan , Scott Alan Diddams , Kerry John Vahala , Joel Wei Guo , Chao Xiang , Warren B. Jin , Charles Armand McLemore , Peter Thomas Rakich , John Edward Bowers , Lin Chang
IPC分类号： H01S5/14 , H01S5/02 , H01S5/02253 , H01S5/026
CPC分类号： H01S5/142 , H01S5/0215 , H01S5/02253 , H01S5/026
摘要： An exemplary integrated chip-scale laser assembly includes a chip-scale laser and a compact reference optical cavity optically coupled to an output of the chip-scale laser. The compact reference optical cavity is preferably a vacuum-gap Fabry-Perot (FP) reference cavity. Coupling to the Fabry-Perot cavity from a planar waveguide circuit via bonding may be achieved with metasurfaces and/or grating couplers. The cavity may be edge-coupled to a photonic circuit with a gradient index lens.
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公开(公告)号：US12014247B2
公开(公告)日：2024-06-18
申请号：US17743850
申请日：2022-05-13
申请人： University of Maryland, College Park , Government of the United States of America, as Represented by the Secretary of Commerce
IPC分类号： G06N10/70
CPC分类号： G06N10/70
摘要： A method for detecting a two-qubit correlated dephasing error includes accessing a signal of a quantum system, where the quantum system includes a plurality of qubits. Every qubit has a nonzero rate of dephasing and some qubits have a nonzero rate of correlated dephasing. The signal further includes information about a matrix that includes diagonal elements and off-diagonal elements. The off-diagonal elements of the matrix are 2s-sparse. The method further includes performing randomized measurements of the off-diagonal elements of the matrix and recovering the matrix based on a direct measurement of the diagonal elements of the matrix.
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公开(公告)号：US20240167877A1
公开(公告)日：2024-05-23
申请号：US18514008
申请日：2023-11-20
发明人： Young Jong Lee
CPC分类号： G01J3/433 , G01J3/0229 , G01N21/3103
摘要： A method of determining an optical spectrum for a sample substance includes splitting a source beam into a reference beam and a sample beam, periodically modulating the intensity of the beams out of phase of each other, directing the reference beam through a reference substance and the sample beam through the sample substance. The beams are then recombined, and a single detector detects the intensity difference at the modulation frequency to determine the spectrum of the sample substance.
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公开(公告)号：US11968540B2
公开(公告)日：2024-04-23
申请号：US17340819
申请日：2021-06-07
IPC分类号： H04W16/14 , H04W72/0453 , H04W72/541
CPC分类号： H04W16/14 , H04W72/0453 , H04W72/541
摘要： Systems and methods for independently managing wireless transmission by individual spectrum access systems in a radio frequency spectrum shared by a plurality of spectrum access systems. An example method includes: receiving, by the spectrum access system, an interference budget from a sensor; determining, by the spectrum access system, secondary users managed by the spectrum access system in a radio frequency spectrum shared by a plurality of spectrum access systems; managing a move list for the spectrum access system independently of the other spectrum access systems in an absence of exchange of spectrum grant information with the other spectrum access systems; and determining the move list for the spectrum access system from a first moment and a second moment of an aggregate interference distribution such that the spectrum access system provides grants to its secondary users in a dynamic protection area of the spectrum access system.
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公开(公告)号：US11956601B2
公开(公告)日：2024-04-09
申请号：US17835478
申请日：2022-06-08
IPC分类号： H04R29/00
CPC分类号： H04R29/004
摘要： An interferometric microphone calibrator for comparison calibrating a microphone, the interferometric microphone calibrator comprising: an interferometer in optical communication with a microphone and that produces an interferometer measurement light, communicates the interferometer measurement light to the microphone, and receives an interferometer backscattered light from the microphone, such that a sensitivity of a test microphone is interferometrically calibrated to a reference microphone from the interferometer backscattered light; a preamplifier-controller in electrical communication with the microphone, and that receives a driver signal from a microphone driver and drives the microphone driver; the microphone driver in electrical communication with the preamplifier-controller and that receives a driver control signal from a calibration controller and produces the driver signal based on the driver control signal; and a calibration controller in electrical communication with the microphone driver and that produces the driver control signal and communicates the driver control signal to the microphone driver.
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公开(公告)号：US11940714B2
公开(公告)日：2024-03-26
申请号：US17545451
申请日：2021-12-08
申请人： University of Maryland, College Park , Government of the United States of America, as Represented by the Secretary of Commerce
CPC分类号： G02F1/3534 , G02F1/313 , G02F1/365
摘要： A quantum EIT-based optical switch includes a first waveguide, linear or nonlinear, a separate nonlinear waveguide evanescently coupled to the first waveguide, and a pump coupled to the nonlinear waveguide. A quantum STIRAP-based optical transduction device, which includes an auxiliary, intermediate spectral state for the quantum signal that aids efficient transduction of the quantum signal from the input spectral state to the output spectral state in a single device.
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9.发明授权公开(公告)号：US11940276B2
公开(公告)日：2024-03-26
申请号：US17177895
申请日：2021-02-17
IPC分类号： G01C19/62 , G01B9/02015 , G01P15/093 , G21K1/06 , G21K1/12 , G01C19/64
CPC分类号： G01C19/62 , G01B9/0203 , G01P15/093 , G21K1/067 , G21K1/12 , G01C19/64
摘要： An inertial point-source matter-wave atom interferometer gyroscope includes an analyzer that receives fringe images of gyroscope atoms and includes: a first fringe image that includes a first fringe phase, a second fringe image that includes a second fringe phase; and a third fringe image that includes a third fringe phase, wherein the first fringe phase, the second fringe phase, and the third fringe phase are different; a phase mapper of the analyzer that produces a interferometric phase map for the gyroscope atoms from the fringe images of the gyroscope atoms; and a fitter of the analyzer in communication with the phase mapper and that receives the interferometric phase map from the analyzer and determines inertial parameters of the gyroscope atoms from the interferometric phase map, the inertial parameters including an acceleration and a rotation rate of the inertial point-source matter-wave atom interferometer gyroscope relative to the gyroscope atoms.
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公开(公告)号：US11906350B2
公开(公告)日：2024-02-20
申请号：US17336964
申请日：2021-06-02
发明人： Michael Gaitan , Jon Clement Geist , Benjamin James Reschovsky , Akobuije Douglas Eziani Chijioke
IPC分类号： G01H9/00
CPC分类号： G01H9/002
摘要： A calibration apparatus for calibrating a laser Doppler vibrometer includes: a frequency shifter stage that: receives, from the laser Doppler vibrometer, primary laser light; produces frequency shifted light; communicates the frequency shifted light to a reflector; receives frequency shifted light reflected by the reflector; produces secondary light; and communicates the secondary light to the laser Doppler vibrometer, such that the laser Doppler vibrometer receives the secondary light from the frequency shifter stage and produces a synthetic velocity shift from the secondary light; and the reflector that receives and reflects the frequency shifted light back to the frequency shifter stage.
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