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公开(公告)号：US20250086489A1
公开(公告)日：2025-03-13
申请号：US18801092
申请日：2024-08-12
Applicant: Google LLC
Inventor： Yu Chen , John Martinis , Daniel Thomas Sank , Alireza Shabani Barzegar
Abstract: A qubit device includes an elongated thin film uninterrupted by Josephson junctions, a quantum device in electrical contact with a proximal end of the elongated thin film, and a ground plane that is co-planar with the elongated thin film and is in electrical contact with a distal end of the elongated thin film, in which the thin film, the quantum device, and the ground plane comprise a material that is superconducting at a designed operating temperature.
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公开(公告)号：US12086684B2
公开(公告)日：2024-09-10
申请号：US17201510
申请日：2021-03-15
Applicant: Google LLC
Inventor： Yu Chen , John Martinis , Daniel Thomas Sank , Alireza Shabani Barzegar
CPC classification number: G06N10/00 , G06F13/4068 , H01P3/003 , H10N60/805
Abstract: A qubit device includes an elongated thin film uninterrupted by Josephson junctions, a quantum device in electrical contact with a proximal end of the elongated thin film, and a ground plane that is co-planar with the elongated thin film and is in electrical contact with a distal end of the elongated thin film, in which the thin film, the quantum device, and the ground plane comprise a material that is superconducting at a designed operating temperature.
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公开(公告)号：US20220261679A1
公开(公告)日：2022-08-18
申请号：US17623034
申请日：2019-06-27
Applicant: Google LLC
Inventor： Daniel Thomas Sank , Zijun Chen
IPC: G06N10/40
Abstract: Methods, systems, and apparatus for measuring the dispersive shift or linewidth of a resonator coupled to a qubit. In one aspect, a method includes the actions of: generating resonator response data, comprising, for each of two computational states of the qubit: for each of multiple qubit drive frequencies: for each of multiple resonator drive frequencies: preparing the qubit in the computational state; applying a first drive pulse with the resonator drive frequency to the resonator, applying a second drive pulse with the qubit drive frequency to the qubit; measuring the state of the qubit; and processing the generated resonator response data to determine the dispersive shift or linewidth of the resonator.
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公开(公告)号：US11367011B2
公开(公告)日：2022-06-21
申请号：US16468150
申请日：2016-12-13
Applicant: Google LLC
Inventor： Julian Shaw Kelly , Daniel Thomas Sank
Abstract: Apparatus and methods for performing qubit readout. In one aspect, an apparatus includes a qubit that operates at a qubit frequency; a frequency controller that is configured to control the qubit frequency and that during a qubit measurement operation is configured to: determine a compensation pulse that when applied to the qubit, counteracts qubit frequency changes during the qubit measurement operation; and apply the determined compensation pulse to the qubit during the qubit measurement operation to maintain the qubit frequency.
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公开(公告)号：US20200242503A1
公开(公告)日：2020-07-30
申请号：US16849363
申请日：2020-04-15
Applicant: Google LLC
Inventor： Yu Chen , John Martinis , Daniel Thomas Sank , Alireza Shabani Barzegar
Abstract: A qubit device includes an elongated thin film uninterrupted by Josephson junctions, a quantum device in electrical contact with a proximal end of the elongated thin film, and a ground plane that is co-planar with the elongated thin film and is in electrical contact with a distal end of the elongated thin film, in which the thin film, the quantum device, and the ground plane comprise a material that is superconducting at a designed operating temperature.
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Patent Agency Ranking
6.发明申请公开(公告)号：US20250005424A1
公开(公告)日：2025-01-02
申请号：US18758727
申请日：2024-06-28
Applicant: Google LLC
Inventor： Michael Gabriel Newman , Kevin Satzinger , Daniel Thomas Sank , Nathan Cody Jones
Abstract: Methods, systems, and apparatus for enhanced decoding using in-phase and quadrature information. In one aspect, a method includes obtaining in-phase and quadrature values for multiple measurement operations in a quantum error correction code for a quantum computation; classifying measurement outcomes of the multiple measurement operations using respective in-phase and quadrature values; generating a detector graph of nodes and edges, wherein the detector graph labels detection events that occur in the classified measurement outcomes; assigning weights to the edges of the detector graph using posterior probability distributions of the classified measurement outcomes to generate a weighted detector graph; and executing a decoding process on the weighted detector graph to compute a decoding output of the decoding process, wherein the decoding output predicts an occurrence of errors in the quantum computation.
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公开(公告)号：US20220277214A1
公开(公告)日：2022-09-01
申请号：US17748938
申请日：2022-05-19
Applicant: Google LLC
Inventor： Julian Shaw Kelly , Daniel Thomas Sank
Abstract: Apparatus and methods for performing qubit readout. In one aspect, an apparatus includes a qubit that operates at a qubit frequency; a frequency controller that is configured to control the qubit frequency and that during a qubit measurement operation is configured to: determine a compensation pulse that when applied to the qubit, counteracts qubit frequency changes during the qubit measurement operation; and apply the determined compensation pulse to the qubit during the qubit measurement operation to maintain the qubit frequency.
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公开(公告)号：US20210256412A1
公开(公告)日：2021-08-19
申请号：US17201510
申请日：2021-03-15
Applicant: Google LLC
Inventor： Yu Chen , John Martinis , Daniel Thomas Sank , Alireza Shabani Barzegar
Abstract: A qubit device includes an elongated thin film uninterrupted by Josephson junctions, a quantum device in electrical contact with a proximal end of the elongated thin film, and a ground plane that is co-planar with the elongated thin film and is in electrical contact with a distal end of the elongated thin film, in which the thin film, the quantum device, and the ground plane comprise a material that is superconducting at a designed operating temperature.
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公开(公告)号：US10949769B2
公开(公告)日：2021-03-16
申请号：US16849363
申请日：2020-04-15
Applicant: Google LLC
Inventor： Yu Chen , John Martinis , Daniel Thomas Sank , Alireza Shabani Barzegar
Abstract: A qubit device includes an elongated thin film uninterrupted by Josephson junctions, a quantum device in electrical contact with a proximal end of the elongated thin film, and a ground plane that is co-planar with the elongated thin film and is in electrical contact with a distal end of the elongated thin film, in which the thin film, the quantum device, and the ground plane comprise a material that is superconducting at a designed operating temperature.
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公开(公告)号：US20190303788A1
公开(公告)日：2019-10-03
申请号：US16468150
申请日：2016-12-13
Applicant: Google LLC
Inventor： Julian Shaw Kelly , Daniel Thomas Sank
Abstract: Apparatus and methods for performing qubit readout. In one aspect, an apparatus includes a qubit that operates at a qubit frequency; a frequency controller that is configured to control the qubit frequency and that during a qubit measurement operation is configured to: determine a compensation pulse that when applied to the qubit, counteracts qubit frequency changes during the qubit measurement operation; and apply the determined compensation pulse to the qubit during the qubit measurement operation to maintain the qubit frequency.
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