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公开(公告)号：US20240272262A1
公开(公告)日：2024-08-15
申请号：US18636077
申请日：2024-04-15
申请人： ColdQuanta, Inc.
IPC分类号： G01S3/46
CPC分类号： G01S3/46
摘要： A probe laser beam causes molecules to transition from a ground state to an excited state. A control laser beam causes molecules in the excited state to transition to a laser-induced Rydberg state. Microwave lenses convert a microwave wavefront into respective microwave beams. The microwave beams are counter-propagated through molecules so as to create a microwave interference pattern of alternating maxima and minima. The microwave interference pattern is imposed on the probe beam as a probe transmission pattern. The propagation direction of the microwave wavefront can be determined from the translational position of the probe transmission pattern; the intensity of the microwave wavefront can be determined by the intensity difference between the minima and maxima of the probe transmission pattern.
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公开(公告)号：US20240211788A1
公开(公告)日：2024-06-27
申请号：US18391190
申请日：2023-12-20
申请人： ColdQuanta, Inc.
IPC分类号： G06N10/20
CPC分类号： G06N10/20
摘要： A quantum-hardened power grid includes grid nodes (e.g., power plants, renewable energy sources and substations) and transmission lines connecting the grid nodes. The grid nodes include stable quantum clocks that permit the power grid to continue operation in the event of downtime for a GPS or other external synchronization reference. Operation sans an external reference can be extended by synchronizing atomic clocks across grid nodes using a quantum network. The atomic clocks can be used with quantum sensors and quantum computers to provide grid state estimates, e.g., using quantum tomography “at the edge”. In addition, these quantum devices can be used to compute responses to grid faults and cyberattacks.
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公开(公告)号：US20240146319A1
公开(公告)日：2024-05-02
申请号：US18386232
申请日：2023-11-01
申请人： ColdQuanta, Inc.
发明人： Judith Olson
摘要： A method for controlling an atomic clock is described. The method includes receiving, at a processor, a request including an operational mode of multiple operational modes for the atomic clock. The atomic clock includes a local oscillator, a vapor cell, a detector, and a local oscillator controller. The vapor cell includes atoms and receives from the local oscillator a signal having a frequency. The signal causes transitions of the atoms between atomic energy states. The detector detects the transitions and provides to the local oscillator controller an error signal based on the transitions. The error signal indicates a difference between the frequency and a target frequency. The local oscillator controller controls the local oscillator based on the error signal. The processor determines, based on the operational mode, values for control parameters for the atomic clock. The atomic clock is controlled using the values of the parameters.
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公开(公告)号：US11880171B2
公开(公告)日：2024-01-23
申请号：US17695979
申请日：2022-03-16
申请人： ColdQuanta, Inc.
发明人： Evan Salim , Judith Olson , Andrew Kortyna , Dina Genkina , Flavio Cruz
CPC分类号： G04F5/145 , G01N21/645 , G04F5/14 , H03L7/26 , G01N2021/6471
摘要： A fluorescence detection process begins by localizing rubidium 87 atoms within an optical (all-optical or magneto-optical) trap so that at least most of the atoms in the trap are within a cone defined by an effective angle, e.g., 8°, of a spectral filter. Within the effective angle of incidence, the filter effectively rejects (reflects or absorbs) 778 nanometer (nm) fluorescence and effectively transmits 775.8 nm fluorescence. Any 775.8 nm fluorescence arrive outside the effective angle of incidence. Thus, using an optical trap to localize the atoms within the cone enhances the signal-to-noise ratio of the fluorescence transmitted through the spectral filter and arriving a photomultiplier or other photodetector, resulting fluorescence detection signal with an enhanced S/N.
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公开(公告)号：US20230260670A1
公开(公告)日：2023-08-17
申请号：US17959979
申请日：2022-10-04
申请人： ColdQuanta, Inc.
IPC分类号： G21K1/00
CPC分类号： G21K1/00
摘要： A drop-in multi-optics module for a quantum-particle (e.g., rubidium, cesium) cell provides for more convenient and cost-effective manufacture of such cells (including vacuum cells, cold/ultra-cold matter cells, vapor cells, and channel cells). In a 3D printing approach, a model of a frame augmented by buffer material is 3D printed. The buffer material is removed from the augmented frame to achieved desired dimensions with greater precision than could be achieved by 3D printing the frame directly. Optical and, in some cases, other components are attached to the frame to realize the multi-optics drop-in module. Alternatively, the module can be formed by cutting out portions of a metal sheet and then folding the resulting 2D preform.
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公开(公告)号：US11699738B2
公开(公告)日：2023-07-11
申请号：US17326371
申请日：2021-05-21
CPC分类号： H01L29/66439 , G06N10/00 , H01L29/15 , H01L29/66977 , H01L29/775 , H10N99/05
摘要： A qubit array reparation system includes a reservoir of ultra-cold particle, a detector that determines whether or not qubit sites of a qubit array include respective qubit particles, and a transport system for transporting an ultra-cold particle to a first qubit array site that has been determined by the probe system to not include a qubit particle so that the ultra-cold particle can serve as a qubit particle for the first qubit array site. A qubit array reparation process includes maintaining a reservoir of ultra-cold particles, determining whether or not qubit-array sites contain respective qubit particles, each qubit particle having a respective superposition state, and, in response to a determination that a first qubit site does not contain a respective qubit particle, transporting an ultracold particle to the first qubit site to serve as a qubit particle contained by the first qubit site.
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公开(公告)号：US11687042B2
公开(公告)日：2023-06-27
申请号：US17695986
申请日：2022-03-16
申请人： ColdQuanta, Inc.
发明人： Evan Salim , Judith Olson , Andrew Kortyna , Dina Genkina , Flavio Cruz
CPC分类号： G04F5/145 , G01N21/645 , G04F5/14 , H03L7/26 , G01N2021/6471
摘要： A frequency-modulated spectrometry (FMS) output is used to stabilize an atomic clock by serving as an error signal to regulate the clock's oscillator frequency. Rubidium 87 atoms are localized within a hermetically sealed cell using an optical (e.g., magneto-optical) trap. The oscillator output is modulated by a sinusoidal radio frequency signal and the modulated signal is then frequency doubled to provide a modulated 788 nm probe signal. The probe signal excites the atoms, so they emit 775.8 nm fluorescence. A spectral filter is used to block 788 nm scatter from reaching a photodetector, but also blocks 775.8 nm fluorescence with an angle of incidence larger than 8° relative to a perpendicular to the spectral filter. The localized atoms lie within a conical volume defined by the 8° effective angle of incidence so an FMS output with a high signal-to-noise ratio is obtained.
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公开(公告)号：US11630143B2
公开(公告)日：2023-04-18
申请号：US17734706
申请日：2022-05-02
申请人： ColdQuanta, Inc.
摘要： A microwave sensor determines an electric-field strength of a microwave field populated by quantum particles in an ultra-high vacuum (UHV) cell. A probe laser beam and a coupling laser beam are directed into the UHV cell so that they are generally orthogonal to each other and intersect to define a “Rydberg” intersection, so-called as the quantum particles within the Rydberg intersection transition to a pair of Rydberg states. The frequency of the probe laser beam is swept so that a frequency spectrum of the probe laser beam can be captured. The frequency spectrum is analyzed to determine a frequency difference between Autler-Townes peaks. The electric-field strength of the microwave field within the Rydberg intersection is then determined based on this frequency difference.
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公开(公告)号：US20230080889A1
公开(公告)日：2023-03-16
申请号：US17687641
申请日：2022-03-06
申请人： ColdQuanta, Inc.
摘要： A closed-loop coherent oscillator matterwave (COMW) system generates a COMW. Atoms tunnel into a COMW oscillator to populate the COMW generated and emitted by the oscillator. A detuned light-field-based COMW splitter divides the emitted COMW between an output COMW and a regulator COMW. A COMW resonator, including detuned light-field mirrors, receives the regulator COMW and returns a feedback COMW. A COMW sensor evaluates the intensity of the feedback COMW. A controller adjusts the oscillator based on the evaluation to optimize the COMW output of the system.
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公开(公告)号：US20220172935A1
公开(公告)日：2022-06-02
申请号：US17675973
申请日：2022-02-18
申请人： ColdQuanta, Inc.
IPC分类号： H01J41/12 , G05B19/04 , H01J27/04 , G05B19/048
摘要： A sputter-ion-pump system includes a sputter ion pump and an electronic drive. The electronic drive supplies a voltage across the ion pump to establish, in cooperation with a magnetic field, a Penning trap within the ion pump. A current sensor measures the Penning-trap current across the Penning trap. The Penning trap is used as an indication of pressure within the ion pump or a vacuum chamber including or in fluid communication with the ion pump. The pressure information can be used to determine flow rates, e.g., due to a load, outgassing, and/or leakage from an ambient.
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