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公开(公告)号：US10473943B1
公开(公告)日：2019-11-12
申请号：US15806509
申请日：2017-11-08
Applicant: ColdQuanta, Inc.
Inventor： Steven Michael Hughes
Abstract: Beamformers are formed (e.g., carved) from a stack of transparent sheets. A rear face of each sheet has a reflective coating. The reflectivities of the coatings vary monotonically with sheet position within the stack. The sheets are tilted relative to the intended direction of an input beam and then bonded to form the stack. The carving can include dicing the stack to yield stacklets, and polishing the stacklets to form beamformers. Each beamformer is thus a stack of beamsplitters, including a front beamsplitter in the form of a triangular or trapezoidal prism, and one or more beamsplitters in the form of rhomboid prisms. In use, a beamformer forms an output beam from an input beam. More specifically, the beamformer splits an input beam into plural output beam components that collectively constitute an output beam that differs in cross section from the input beam.
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公开(公告)号：US10460918B2
公开(公告)日：2019-10-29
申请号：US15948465
申请日：2018-04-09
Applicant: ColdQuanta, Inc.
Inventor： Steven Michael Hughes
Abstract: An ultra-high vacuum (UHV) system includes a UHV cell and an ion pump to maintain the UHV in the UHV cell. The ion pump has a GCC (glass, ceramic, or crystalline) housing. An interior wall of the ion-pump housing serves as an anode or bears a coating that serves as an anode. At least one cathode is disposed with respect to the housing so that it can cooperate with the anode to form an electric field for establishing a Penning trap. The GCC housing defines a flow channel that extends radially through the anode so that a molecule can flow directly into the most ionizing region of a Penning trap.
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公开(公告)号：US10103463B1
公开(公告)日：2018-10-16
申请号：US15825600
申请日：2017-11-29
Applicant: ColdQuanta, Inc.
Inventor： Steven Michael Hughes
Abstract: An atomtronic (e.g., ultra-cold-matter physics or ion-trap) system includes a vacuum-cell structure, an integrated-circuit package with a pin-grid array, and a socket for interfacing the integrated-circuit package with external control and monitoring systems. After pins of the pin-grid array are inserted into holes of plates in the socket, the plates are moved in opposite directions so that contacts within the holes clamp in place the pins, providing electrical connections. The in-place clamping avoids stress at the seal between the integrated circuit package and the vacuum cell structure; thus, stress that could otherwise compromise the vacuum seal is avoided so as to yield a more reliable vacuum.
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公开(公告)号：US20180233337A1
公开(公告)日：2018-08-16
申请号：US15946898
申请日：2018-04-06
Applicant: ColdQuanta, Inc.
Inventor： Steven Michael Hughes
Abstract: A cold-atom cell is formed by machining a block of silicon to define sites for an atom source chamber, an atom manipulation chamber, and an ion-pump chamber. A polished silicon panel is frit-bonded to an unpolished (due to machining) chamber wall (which would be difficult and costly to polish). The polished panel can then serve as a reflector or a sight for anodic bonding. A solid-phase atom source provides for vapor phase atoms in the source chamber. The source chamber also includes carbon and gold to regulate the atom pressure by sorbing and desorbing thermal atoms. The atom manipulation chamber includes components for magneto-optical trap and an atom chip, e.g., for forming a Bose-Einstein condensate. The ion-pump chamber serves as the site for an ion pump. By integrating the ion pump into the body of the cold-atom cell, a more compact, reliable, and robust cold-atom cell is achieved. In addition to the embodiment just described, several variations and alternatives are presented and within the scope of the claims.
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公开(公告)号：US12298721B2
公开(公告)日：2025-05-13
申请号：US18215798
申请日：2023-06-28
Applicant: ColdQuanta, Inc.
Inventor： Evan Salim , Judith Olson , Andrew Kortyna , Dina Genkina , Flavio Cruz
Abstract: A rubidium optical atomic clock uses a modulated 778 nanometer (nm) probe beam and its reflection to excite rubidium 87 atoms, some of which emit 758.8 nm fluorescence as they decay back to the ground state. A spectral filter rejects scatter of the 778 nm probe beams while transmitting the 775.8 nm fluorescence so that the latter can be detected with a high signal-to-noise ratio. Since the spectral filter is only acceptably effective at angles of incidence less than 8° from the perpendicular, the atoms are localized by a magneto-optical trap so that most of the atoms lie within a conical volume defined by the 8° angle so that the resulting fluorescence detection signal has a high signal-to-noise ratio. The fluorescence detection signal can be demodulated to provide an error signal from which desired adjustments to the oscillator frequency can be calculated.
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Patent Agency Ranking
公开(公告)号：US12295132B1
公开(公告)日：2025-05-06
申请号：US18137983
申请日：2023-04-21
Applicant: ColdQuanta, Inc.
Inventor： Steven Michael Hughes , Evan Salim , Hugo Leon , Christopher Robert Sheridan, III , Stetson Joe Roof
Abstract: A system including a vacuum cell, an ion pump, and a multi-layer magnetic shield is described. The vacuum cell includes a magnetic field-sensitive section, a pump section, and a channel section providing a vacuum conductance path between the magnetic field-sensitive section and the pump section. The ion pump is in the pump section. The multi-layer magnetic shield surrounds at least a portion of the ion pump. The multi-layer magnetic shield has a first layer and a second layer. The first layer is between the second layer and the ion pump. The first layer has a moderate relative magnetic permeability and a high saturation magnetization. The second layer has a high relative magnetic permeability and a moderate saturation magnetization.
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公开(公告)号：US20250131239A1
公开(公告)日：2025-04-24
申请号：US18920295
申请日：2024-10-18
Applicant: ColdQuanta, Inc.
Inventor： Pranav Gokhale , Teague Tomesh
IPC: G06N3/043 , G06N3/0464 , G06N10/40
Abstract: An artificial neural network (ANN) receives a sequence of input data tokens. The ANN has a hidden state memory of size N and a set of weights having a size that scales on or below an order of N. The ANN processes each token in the sequence of input data tokens by performing, based on each token, a logical operation on the hidden state memory to generate an updated hidden state memory. Processing the sequence of input data tokens comprises performing a number of compute operations that scales on or below an order of N{circumflex over ( )}1.5. The ANN obtains, from the updated hidden state memory after processing each token, a final hidden state memory. The ANN generates an inference result based on the final hidden state memory.
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公开(公告)号：US20250052799A1
公开(公告)日：2025-02-13
申请号：US18812324
申请日：2024-08-22
Applicant: ColdQuanta, Inc.
Inventor： Dana Zachary Anderson , Haoquan Fan , Ying-Ju Wang , Eric Magnuson Bottomley , Steven Michael Hughes
IPC: G01R29/08
Abstract: An electromagnetic field detector including a vapor cell, an excitation system, and a frequency tuner is described. The vapor cell has a plurality of quantum particles therein. The excitation system excites the quantum particles to a first Rydberg state. The first Rydberg state has a transition to a second Rydberg state at a first frequency. The frequency tuner generates a tunable field in a portion of the vapor cell. The tunable field shifts the first Rydberg state and/or the second Rydberg state such that the transition to the second Rydberg state is at a second frequency different from the first frequency. The detection frequency range for the electromagnetic field detector is continuous and includes the first frequency and the second frequency.
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公开(公告)号：US12141655B2
公开(公告)日：2024-11-12
申请号：US17353306
申请日：2021-06-21
Applicant: ColdQuanta, Inc.
Inventor： Thomas William Noel , Mark Saffman
Abstract: A trap for quantum particles, e.g., cesium atoms, is formed using electromagnetic radiation (EMR) of different wavelengths (concurrently and/or at different times). “Red-detuned” EMR, having a trap wavelength longer than a resonant wavelength for a quantum particle is “attracting” and, so, can be used to form the array trap while loading atoms into the array trap. “Blue-detuned” EMR, having a trap wavelength shorter than the resonant wavelength can repel atoms into dark areas away from the EMR peaks so that the atoms are not disturbed by interference carried by the EMR; accordingly, the blue-detuned EMR is used to form the array trap during quantum-circuit execution. Red and blue detuned EMR are used together to form deeper traps that can be used to detect vacant atom sites. Other combinations of trap wavelengths can also be used.
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公开(公告)号：US12046387B2
公开(公告)日：2024-07-23
申请号：US17406125
申请日：2021-08-19
Applicant: ColdQuanta, Inc.
Inventor： Steven Michael Hughes
Abstract: An ultra-high-vacuum (UHV) cell includes an integrated guide stack (IGS) as part of a boundary between an internal vacuum and an external ambient. The IGS is formed by bonding together plural integrated guide components (IGCs). Each IGC includes (prior to the bonding) electrical and/or electro-magnetic (EM) guides defined within a bulk material such as glass or silicon. The electrical guides can be, for example, conductive paths or vias, while the EM guides can include microwave or other RF guides, optical fibers and/or paths along which an index of refraction has been modified along an desired optical path. EM and electrical connections between IGCs can be formed after the IGCs are bonded together to form the IGS. Use of an IGS as a vacuum boundary can provide substantial functionality for manipulating and interrogating quantum particles; the functionality can include, for example, the ability to regulate fields within the UHV cell.
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