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公开(公告)号：US20210035005A1
公开(公告)日：2021-02-04
申请号：US16624037
申请日：2017-12-15
Applicant: Google LLC
Inventor： John Martinis , Yu Chen , Hartmut Neven , Dvir Kafri
Abstract: Methods, systems, and apparatus for nonlinear calibration of quantum computing apparatus. In one aspect, elements in a set of experimental data correspond to a respective configuration of control biases for the quantum computing apparatus. An initial physical model comprising one or more model parameters of the quantum computing apparatus is defined. The model is iteratively adjusted to determine a revised physical model, where at each iteration: a set of predictive data corresponding to the set of experimental data is generated, and elements in the predictive data represent a difference between the two smallest eigenvalues of a Hamiltonian characterizing the system qubits for the previous iteration, and are dependent on at least one model parameter of the physical model for the previous iteration; and the model for the previous iteration is adjusted using the obtained experimental data and the generated set of predictive data for the iteration.
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公开(公告)号：US20200250570A1
公开(公告)日：2020-08-06
申请号：US16857955
申请日：2020-04-24
Applicant: Google LLC
Inventor： Alireza Shabani Barzegar , Pedram Roushan , Yu Chen , Hartmut Neven
IPC: G06N10/00 , G01R33/035 , H01P3/00
Abstract: A quantum computing device includes multiple co-planar waveguide flux qubits, at least one coupler element arranged such that each co-planar waveguide flux qubit, of the multiple co-planar waveguide flux qubits, is operatively couplable to each other co-planar waveguide flux qubit, of the multiple co-planar waveguide flux qubits, of the quantum computing device, and a tuning quantum device, in which the tuning quantum device is in electrical contact with a first co-planar waveguide flux qubit of the plurality of co-planar waveguide flux qubits and with a second co-planar waveguide flux qubit of the plurality of co-planar waveguide flux qubits.
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公开(公告)号：US10650320B2
公开(公告)日：2020-05-12
申请号：US15764021
申请日：2015-09-30
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：US20190188597A1
公开(公告)日：2019-06-20
申请号：US16270739
申请日：2019-02-08
Applicant: Google LLC
Inventor： Yu Chen , Dvir Kafri
CPC classification number: G06N10/00 , G06N20/00 , G06N20/10 , G06N99/00 , H01L27/18 , H01L39/223 , H01P3/003 , H01P5/02 , H05K1/111 , H05K1/181
Abstract: A device includes: a first qubit including a first co-planar waveguide; a second qubit including a second co-planar waveguide, in which the second co-planar waveguide crosses the first co-planar waveguide; and a qubit coupler including a loop having a first lobe and a second lobe, in which a first portion of the first lobe extends parallel to the first co-planar waveguide, a second portion of the first lobe extends parallel to the second co-planar waveguide, a first portion of the second lobe extends parallel to the first co-planar waveguide, and a second portion of the second lobe extends parallel to the second co-planar waveguide.
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公开(公告)号：US20190147359A1
公开(公告)日：2019-05-16
申请号：US16096110
申请日：2016-12-30
Applicant: Google LLC
Inventor： Yu Chen , Hartmut Neven , Austin Greig Fowler , Alireza Shabani Barzegar
CPC classification number: G06N10/00 , H01L39/025 , H01P3/003 , H01P7/086
Abstract: A quantum computing device includes: a first array of qubits arranged along a first axis; and a second array of qubits arranged along a second axis different from the first axis so that the qubits of the second array intersect with the qubits of the first array to form a lattice structure, in which each qubit in the first array is offset along the second axis relative to a directly adjacent qubit in the first array, each qubit in the second array is offset along the first axis relative to a directly adjacent qubit in the second array, and each intersection between a qubit from the first array and a qubit from the second array in the lattice structure comprises a coupler arranged to inductively couple the qubit from the first array to the qubit from the second array.
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Patent Agency Ranking
公开(公告)号：US20190065981A1
公开(公告)日：2019-02-28
申请号：US15686902
申请日：2017-08-25
Applicant: Google LLC
Inventor： Yu Chen , Dvir Kafri
Abstract: A device includes: a first qubit including a first co-planar waveguide; a second qubit including a second co-planar waveguide, in which the second co-planar waveguide crosses the first co-planar waveguide; and a qubit coupler including a loop having a first lobe and a second lobe, in which a first portion of the first lobe extends parallel to the first co-planar waveguide, a second portion of the first lobe extends parallel to the second co-planar waveguide, a first portion of the second lobe extends parallel to the first co-planar waveguide, and a second portion of the second lobe extends parallel to the second co-planar waveguide.
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公开(公告)号：US20180365587A1
公开(公告)日：2018-12-20
申请号：US16062076
申请日：2015-12-16
Applicant: Alireza Shabani BARZEGAR , Pedram ROUSHAN , Yu CHEN , Hartmut NEVEN , Google LLC
Inventor： Alireza Shabani Barzegar , Pedram Roushan , Yu Chen , Hartmut Neven
IPC: G06N99/00 , H01P3/00 , G01R33/035
Abstract: A quantum computing device includes multiple co-planar waveguide flux qubits, at least one coupler element arranged such that each co-planar waveguide flux qubit, of the multiple co-planar waveguide flux qubits, is operatively couplable to each other co-planar waveguide flux qubit, of the multiple co-planar waveguide flux qubits, of the quantum computing device, and a tuning quantum device, in which the tuning quantum device is in electrical contact with a first co-planar waveguide flux qubit of the plurality of co-planar waveguide flux qubits and with a second co-planar waveguide flux qubit of the plurality of co-planar waveguide flux qubits.
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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：US10832156B2
公开(公告)日：2020-11-10
申请号：US16096110
申请日：2016-12-30
Applicant: Google LLC
Inventor： Yu Chen , Hartmut Neven , Austin Greig Fowler , Alireza Shabani Barzegar
Abstract: A quantum computing device includes: a first array of qubits arranged along a first axis; and a second array of qubits arranged along a second axis different from the first axis so that the qubits of the second array intersect with the qubits of the first array to form a lattice structure, in which each qubit in the first array is offset along the second axis relative to a directly adjacent qubit in the first array, each qubit in the second array is offset along the first axis relative to a directly adjacent qubit in the second array, and each intersection between a qubit from the first array and a qubit from the second array in the lattice structure comprises a coupler arranged to inductively couple the qubit from the first array to the qubit from the second array.
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