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公开(公告)号：US11810686B2
公开(公告)日：2023-11-07
申请号：US17391194
申请日：2021-08-02
Applicant: ColdQuanta, Inc.
Inventor： Dana Zachary Anderson , Clifton Leon Anderson
Abstract: Atom-scale particles, e.g., neutral and charged atoms and molecules, are pre-cooled, e.g., using magneto-optical traps (MOTs), to below 100 μK to yield cold particles. The cold particles are transported to a sensor cell which cools the cold particles to below 1 μK using an optical trap; these particles are stored in a reservoir within an optical trap within the sensor cell so that they are readily available to replenish a sensor population of particles in quantum superposition. A baffle is disposed between the MOTs and the sensor cell to prevent near-resonant light leaking from the MOTs from entering the sensor cell (and exciting the ultra-cold particles in the reservoir). The transporting from the MOTs to the sensor cell is effected by moving optical fringes of optical lattices and guiding the cold particles attached to the fringes along a meandering path through the baffle and into the sensor cell.
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公开(公告)号：US20220290988A1
公开(公告)日：2022-09-15
申请号：US17826702
申请日：2022-05-27
Inventor： Mikio KOZUMA , Ryotaro INOUE , Toshiyuki HOSOYA , Atsushi TANAKA
Abstract: A geoid calculation data is collected easily. A geoid calculation data collection device of the present invention comprises an inertial measurement data acquisition part, a comparison data acquisition part, and a recording part. In the inertial measurement data acquisition part, data related to velocity, position, and attitude angle is acquired as inertially-derived data based on an output of an inertial measurement part having a three-axis gyro and a three-axis accelerometer attached to a moving body. In the comparison data acquisition part, data related to velocity is acquired as comparison data from a source other than the inertial measurement part. In the recording part, inertially-derived data and comparison data are recorded in association with each other. In the inertial measurement part, a bias stability is acquired that allows error arising from plumb line deviation to be distinguished to a predetermined degree.
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3.发明授权
公开(公告)号：US11378399B2
公开(公告)日：2022-07-05
申请号：US15760033
申请日：2016-09-14
Applicant: THE REGENTS OF THE UNIVERSITY OF MICHIGAN
Inventor： John Wang , Edwin Olson
IPC: G01C19/5776 , G01C21/16 , G01C19/00 , G01C21/00 , G01C19/58
Abstract: A method for determining the rotational rate of a movable member using an array of inertial sensors is provided. The method includes defining a hidden Markov model (“HMM”). The HMM represents a discrete value measurement of the rotational rate of the movable member. A transition probability of the HMM accounts for a motion model (linear or non-linear) of the movable member. An observation probability of the HMM accounts for noise and bias of at least one of the inertial sensors of the array of inertial sensors. A processor receives input from the array of inertial sensors. The processor determines the rotational rate of the movable member by solving for an output of the HMM using the input received from the array of inertial sensors. The processor may use a forward algorithm, a forward-backward algorithm, or a Viterbi algorithm to solve the HMM.
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公开(公告)号：US11243079B2
公开(公告)日：2022-02-08
申请号：US16617894
申请日：2019-11-12
Applicant: KUTZTOWN UNIVERSITY OF PENNSYLVANIA
Inventor： Kunal Das
IPC: G01C19/58 , G01R33/032
Abstract: Embodiments relate to a sensor system configured to detect physical rotation, entire or relative, of one or more objects and/or their environment and/or proximity of a magnetic field, by measuring the degree of localization of a medium trapped in a ring-shaped artificial lattice. The lattice structure can be configured to comprise of lattice sites distributed with a lattice period around an azimuth of a closed ring. The site depths of the plurality of lattice sites can be configured to be modulated with a modulation period different from the lattice period to affect the onsite energies of each lattice site and the eigenstates of the system. Physical rotation of the sensor and/or the proximity of magnetic field will alter the localization properties so as to cause the degree of localization of the medium to change (e.g., the medium becomes more confined in space or more spread out in space).
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公开(公告)号：US20210389127A1
公开(公告)日：2021-12-16
申请号：US17288483
申请日：2019-10-28
Applicant: IXBLUE , INSTITUT D'OPTIQUE GRADUATE SCHOOL , CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE , UNIVERSITE DE BORDEAUX
Inventor： David Brynle BARRETT , Pierrick CHEINEY , Philippe BOUYER
IPC: G01C19/58 , G01P15/093 , G01P15/18
Abstract: Disclosed is a multi-axis atom interferometer system, including a source of cold atoms, a laser source generating a first light pulse configured in such a way as to spatially split the source of cold atoms into a first cloud of atoms propagating along a first trajectory along a first axis and a second cloud of atoms propagating along a second trajectory along a second axis, a second light pulse adapted to spatially deflect the first trajectory along the second axis and simultaneously the second trajectory along the first axis towards a first point and a last light pulse adapted to recombine the at least one part of the first cloud of atoms and the at least one part of the second cloud of atoms at the first point, and a detection system measuring an interferometric phase-shift accumulated between the first light pulse and the last light pulse.
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公开(公告)号：US10809063B2
公开(公告)日：2020-10-20
申请号：US16486759
申请日：2018-03-01
Applicant: Robert Bosch GmbH
Inventor： Guangzhao Zhang , Andrea Visconti , Francesco Diazzi , Ruslan Khalilyulin
IPC: G01C19/58 , G01C19/10 , G01C19/5712 , G01C19/5776
Abstract: A yaw rate sensor having a drive for exciting an oscillation of an oscillatory mass, the drive having at least one drive amplifier circuit, and having a detector for detecting a displacement of the oscillatory mass, the detector having at least one detector amplifier circuit, either a low bias current being able to be set for operating the drive amplifier circuit and/or the detector amplifier circuit in an energy-saver mode, or a higher bias current being able to be set for operating the drive amplifier circuit and/or the detector amplifier circuit in a normal mode.
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公开(公告)号：US10690871B2
公开(公告)日：2020-06-23
申请号：US16528235
申请日：2019-07-31
Applicant: Saudi Arabian Oil Company
Inventor： Frode Hveding
IPC: G02B6/44 , G02B6/42 , E21B47/12 , E21B47/10 , G01V1/18 , G01C19/58 , E21B49/08 , E21B17/00 , G01H9/00
Abstract: A fiber optic cable assembly includes an elongate housing, a plurality of fiber optic cables placed inside the housing and extending longitudinally, and acoustic isolating material placed inside the housing and extending longitudinally. The acoustic isolating material includes a plurality of outwardly radially extending arms extending from a center of the housing towards a circumference of the housing. The plurality of arms divides a space inside the housing into a plurality of acoustically isolated sections. Each acoustically isolated section extends longitudinally. Each acoustically isolated section includes at least one of the plurality of fiber optic cables. Each acoustically isolated section is acoustically insulated from remaining sections of the plurality of acoustically isolated sections. A surface of the acoustic isolating material of each acoustically isolated section is covered by acoustic reflective material.
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公开(公告)号：US10444016B1
公开(公告)日：2019-10-15
申请号：US16019042
申请日：2018-06-26
Applicant: AOSense, Inc.
Inventor： Mark A. Kasevich , Michael R. Matthews , Micah Ledbetter , Ying-Ju Wang , Martin M. Boyd
Abstract: A system for an atomic interferometer includes a laser control system and a feedback control system. The laser control system controls a first pointing angle of a first interrogating laser beam. The first interrogating laser beam and a second interrogating laser beam interrogate a pair of almost counter-propagating laser cooled atomic ensembles. The feedback control system adjusts the first pointing angle based at least in part on an inertial measurement using the atomic interferometer to bias an output of the atomic interferometer to compensate for the effects of rotations. The pointing angle of the laser beam, which is linearly related to a frequency used to drive an acousto-optic deflector, is linearly related to the rotation rate of the sensor.
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公开(公告)号：US10281278B2
公开(公告)日：2019-05-07
申请号：US15402149
申请日：2017-01-09
Applicant: Frederick Ira Moxley, III
Inventor： Frederick Ira Moxley, III
IPC: G01C19/58 , H01L39/22 , H01S5/10 , G01R33/035 , G06N99/00 , G01R33/032 , H01S5/04 , H01S5/183
Abstract: The present disclosure relates to Superfluid QUantum Interference Devices (SQUIDs) that measure phase differences existing in quasi-particles or matter-wave systems, and the related techniques for their use at room-temperatures. These Bose-Einstein Condensation interferometry techniques include quantum scale metrology devices such as quasi-particle based linear accelerometers, gyroscopes, and Inertial Measurement Units that incorporate such interferometers. In the presence of additive white Gaussian noise, estimates are made for the Bias Instability, Angle Random Walk, and Velocity Random Walk of the device for purposes of quantum inertial sensing. Moreover, this disclosure relates to SQUIDs based on charged quasi-particles that can, in turn, be used to construct quantum computing elements such as quantum transistors, and quasi-particle circuits at room-temperatures. These quasi-particle circuits can be used to build analogs of electronic circuit elements, and offer an alternative to traditional electronics. Using a quasi-particle circuit, hysteresis can be achieved and controlled to build these new devices.
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10.发明授权
公开(公告)号：US10275027B2
公开(公告)日：2019-04-30
申请号：US15877206
申请日：2018-01-22
Applicant: NAQI LOGICS, LLC
Inventor： David Lee Segal
IPC: G06F3/01 , G01C19/58 , G06F3/0346
Abstract: A system and method for controlling a non-tactile device including a receiving device configured to receive signals corresponding to a user's EEG or movements, translate the EEG or movements into directional intentions, transmit the directional intentions to a secondary device, receive a command for one or more actions from the secondary device based on the transmitted directional intentions and output at least one control signal to the non-tactile device based on the received command for one or more actions. The non-tactile device may receive signals corresponding to a user's EEG or movements using a gestural sensor and/or an EEG sensor.
