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公开(公告)号：US20230169380A1
公开(公告)日：2023-06-01
申请号：US18095803
申请日：2023-01-11
Applicant: Google LLC
Inventor： John Martinis , Rami Barends , Austin Greig Fowler
IPC: G06N10/00 , H03K19/177
CPC classification number: G06N10/00 , H03K19/177
Abstract: Methods and systems for performing a surface code error detection cycle. In one aspect, a method includes initializing and applying Hadamard gates to multiple measurement qubits; performing entangling operations on a first set of paired qubits, wherein each pair comprises a measurement qubit coupled to a neighboring data qubit in a first direction; performing entangling operations on a second set of paired qubits, wherein each pair comprises a measurement qubit coupled to a neighboring data qubit in a second or third direction, the second and third direction being perpendicular to the first direction, the second direction being opposite to the third direction; performing entangling operations on a third set of paired qubits, wherein each pair comprises a measurement qubit coupled to a neighboring data qubit in a fourth direction, the fourth direction being opposite to the first direction; applying Hadamard gates to the measurement qubits; and measuring the measurement qubits.
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公开(公告)号：US11527698B2
公开(公告)日：2022-12-13
申请号：US16616733
申请日：2017-09-07
Applicant: Google LLC
Inventor： John Martinis
Abstract: The subject matter of the present disclosure may be embodied in devices, such as flexible wiring, that include: an elongated flexible substrate; multiple electrically conductive traces arranged in an array on a first side of the elongated flexible substrate; and an electromagnetic shielding layer on a second side of the elongated flexible substrate, the second side being opposite the first side, in which the elongated flexible substrate includes a fold region between a first electronically conductive trace and a second electrically conductive trace such that the electromagnetic shielding layer provides electromagnetic shielding between the first electronically conductive trace and the second electrically conductive trace.
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43.发明申请公开(公告)号：US20220087012A1
公开(公告)日：2022-03-17
申请号：US17476612
申请日：2021-09-16
Applicant: Google LLC
Inventor： John Martinis , Xiaojun Trent Huang , Bob Benjamin Buckley
Abstract: A flex circuit board can be used in transmitting signals in a quantum computing system. The flex circuit board can include at least one dielectric layer and at least one superconducting layer disposed on a surface of the at least one dielectric layer. The at least one superconducting layer can include a superconducting material. The superconducting material can be superconducting at a temperature less than about 3 kelvin. The flex circuit board can have at least one metal structure electroplated onto the at least one superconducting layer.
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Patent Agency Ranking
公开(公告)号：US20220083892A1
公开(公告)日：2022-03-17
申请号：US17476646
申请日：2021-09-16
Applicant: Google LLC
Inventor： John Martinis , Bob Benjamin Buckley , Xiaojun Trent Huang
Abstract: A T-joint connector can be useful for connecting one or more flex circuit boards to quantum hardware including one or more qubits. The T-joint connector can include one or more flex circuit boards. Each of the one or more flex circuit boards can include one or more signal lines and one or more spring interconnects including a superconducting material. The one or more spring interconnects can be coupled to the one or more signal lines. The one or more spring interconnects can be configured to couple the one or more signal lines to one or more signal pads disposed on a mounting circuit board associated with the quantum hardware. The superconducting material can be superconducting at a temperature less than about 3 kelvin.
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公开(公告)号：US20220083891A1
公开(公告)日：2022-03-17
申请号：US17476606
申请日：2021-09-16
Applicant: Google LLC
Inventor： John Martinis , Bob Benjamin Buckley , Xiaojun Trent Huang
Abstract: A laminated circuit assembly for filtering signals in one or more signal lines in, for instance, a quantum computing system is provided. In one example, the laminated circuit assembly includes one or more signal lines disposed within a substrate in a first direction. The laminated circuit assembly includes a dielectric portion of the substrate. The laminated circuit assembly includes a filter portion of the substrate extending in a first direction and containing a frequency absorbent material providing less attenuation to a first signal of a first frequency than to a second signal of a second, higher frequency. The filter portion is configured to attenuate infrared signals passing through the one or more signal lines.
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公开(公告)号：US11049036B2
公开(公告)日：2021-06-29
申请号：US16636528
申请日：2017-08-09
Applicant: Google LLC
Inventor： John Martinis , Rami Barends , Austin Greig Fowler
Abstract: Methods, systems, and apparatus for operating a system of qubits. In one aspect, a method includes operating a first qubit from a first plurality of qubits at a first qubit frequency from a first qubit frequency region, and operating a second qubit from the first plurality of qubits at a second qubit frequency from a second first qubit frequency region, the second qubit frequency and the second first qubit frequency region being different to the first qubit frequency and the first qubit frequency region, respectively, wherein the second qubit is diagonal to the first qubit in a two-dimensional grid of qubits.
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公开(公告)号：US20210028346A1
公开(公告)日：2021-01-28
申请号：US16616733
申请日：2017-09-07
Applicant: Google LLC
Inventor： John Martinis
Abstract: The subject matter of the present disclosure may be embodied in devices, such as flexible wiring, that include: an elongated flexible substrate; multiple electrically conductive traces arranged in an array on a first side of the elongated flexible substrate; and an electromagnetic shielding layer on a second side of the elongated flexible substrate, the second side being opposite the first side, in which the elongated flexible substrate includes a fold region between a first electronically conductive trace and a second electrically conductive trace such that the electromagnetic shielding layer provides electromagnetic shielding between the first electronically conductive trace and the second electrically conductive trace.
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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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