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公开(公告)号：US11893452B2
公开(公告)日：2024-02-06
申请号：US17173985
申请日：2021-02-11
Applicant: ColdQuanta, Inc.
Inventor： Thomas William Noel , Mark Saffman , Matthew Ebert
CPC classification number: G06N10/00
Abstract: In the context of gate-model quantum computing, atoms (or polyatomic molecules) are excited to respective Rydberg states to foster intra-gate interactions. Rydberg states with relatively high principal quantum numbers are used for relatively distant intra-gate interactions and require relatively great inter-gate separations to avoid error-inducing inter-gate interactions. Rydberg states with relatively low principal quantum numbers can be used for intra-gate interactions over relatively short intra-gate distances and require relatively small inter-gate separations to avoid error-inducing inter-gate interactions. The relatively small inter-gate separations provide opportunities for parallel gate executions, which, in turn, can provide for faster execution of the quantum circuit constituted by the gates. By using Rydberg states with relatively high principal quantum numbers where required, and Rydberg states with relatively low principal quantum numbers where possible, an optimal tradeoff between intra-gate interaction flexibility and inter-gate parallelism can be achieved.
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公开(公告)号：US12057242B2
公开(公告)日：2024-08-06
申请号：US17340787
申请日：2021-06-07
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：US11531249B1
公开(公告)日：2022-12-20
申请号：US17727756
申请日：2022-04-24
Applicant: ColdQuanta, Inc.
Inventor： Mark Saffman
IPC: G02F1/33
Abstract: A pair of acousto-optic deflectors (AODs) is used to steer a pair of laser beams to address individual atoms of an array of atoms so that the beams can conditionally induce a 2-photon transition between the atom's quantum energy levels. The first beam is deflected into a +1 diffraction order, resulting in an AOD output beam with a frequency greater than that of the respective AOD input beam. The second beam is deflected into a −1 diffraction order so that the AOD output beam has a frequency less than that of the respective AOD input beam. The equal and opposite frequency changes compensate it other so that the sum of the output frequencies remains constant.
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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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Patent Agency Ranking
公开(公告)号：US11997780B2
公开(公告)日：2024-05-28
申请号：US17340039
申请日：2021-06-06
Applicant: ColdQuanta, Inc.
Inventor： Mark Saffman , Thomas William Noel , Steven Michael Hughes
CPC classification number: H05H3/04 , G06N10/00 , H05H2242/00
Abstract: A vacuum cell provides for electric field control within an ultra-high vacuum (UHV) for cold-neutral-atom quantum computing and other quantum applications. Electrode assemblies extend through vacuum cell walls. Prior to cell assembly, contacts are bonded to respective locations on the ambient-facing surfaces of the walls. Trenches are formed in the vacuum-facing surfaces of walls and via holes are formed, extending from trenches through the wall and into the contacts. Plating conductive material into the trenches and via holes forms the electrodes and vias. The electrodes are contained by the trenches and do not extend beyond the trenches so as to avoid interfering with the bonding of components to the vacuum-facing surfaces of the walls. The vias extend into the contacts to ensure good electrical contact. An electric-field controller applies electric potentials to the electrodes (via the contacts) to control electric fields within the vacuum.
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公开(公告)号：US20240370753A1
公开(公告)日：2024-11-07
申请号：US18205434
申请日：2023-06-02
Applicant: ColdQuanta, Inc.
Inventor： Michael A. Perlin , Pranav Gokhale , Frederic T. Chong , Mark Saffman , Dana Zachary Anderson
Abstract: Sense+compute (S+C) quantum-state carriers (QSCs), e.g., rubidium atoms, can be used provide more scalable quantum sensor systems. Multiple S+C QSCs can capture sensor data. The sensor data can then be transformed in the quantum domain according to a quantum tomographic protocol. The transformed data can be measured to provide a respective classical domain measurement. The sensing, transformation, and measurement can be repeated to provide a set of measurements (corresponding to different transformations) that can be combined according to the quantum tomography protocol to generate a model of the original quantum state. Estimation error associated with the model can be scaled down at a rate corresponding more closely to increases in the number N of QSCs than √{square root over (N)}, even in the presence of noise.
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7.发明授权公开(公告)号：US11575860B2
公开(公告)日：2023-02-07
申请号：US16859743
申请日：2020-04-27
Applicant: Wisconsin Alumni Research Foundation , ColdQuanta, Inc.
Inventor： Mark Saffman , Trent Michael Graham , Robert Sylvester Williamson, III
Abstract: Systems and methods for the optical control of qubits and other quantum particles with spatial light modulators (SLM) for quantum computing and quantum simulation are disclosed herein. The system may include a particle system configured to provide an ordered array comprising a multiplicity of quantum particles or a multiplicity of qubits, an optical source, a SLM configured to project a structured illumination pattern capable of individually addressing one or more quantum particles or qubits of the ordered array, and a SLM controller.
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公开(公告)号：US11488052B1
公开(公告)日：2022-11-01
申请号：US17727760
申请日：2022-04-24
Applicant: ColdQuanta, Inc.
Inventor： Mark Saffman
Abstract: A pair of acousto-optic deflectors (AODs) is used to steer a pair of laser beams to address individual atoms of an array of atoms so that the beams can conditionally induce a 2-photon transition between the atom's quantum energy levels. The first beam is deflected into a +1 diffraction order, resulting in an AOD output beam with a frequency greater than that of the respective AOD input beam. The second beam is deflected into a −1 diffraction order so that the AOD output beam has a frequency less than that of the respective AOD input beam. The equal and opposite frequency changes compensate it other so that the sum of the output frequencies remains resonant with the transition of interest. Thus, AODs can be used to steer laser beams to address individual atoms of an atom array.
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9.发明申请公开(公告)号：US20210337171A1
公开(公告)日：2021-10-28
申请号：US16859743
申请日：2020-04-27
Applicant: Wisconsin Alumni Research Foundation , ColdQuanta, Inc.
Inventor： Mark Saffman , Trent Michael Graham , Robert Sylvester Williamson, III
Abstract: Systems and methods for the optical control of qubits and other quantum particles with spatial light modulators (SLM) for quantum computing and quantum simulation are disclosed herein. The system may include a particle system configured to provide an ordered array comprising a multiplicity of quantum particles or a multiplicity of qubits, an optical source, a SLM configured to project a structured illumination pattern capable of individually addressing one or more quantum particles or qubits of the ordered array, and a SLM controller.
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