Patents by Inventor Hartmut Neven

Hartmut Neven has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20210295198
    Abstract: Methods, systems, and apparatus for training quantum evolutions using sub-logical controls. In one aspect, a method includes the actions of accessing quantum hardware, wherein the quantum hardware includes a quantum system comprising one or more multi-level quantum subsystems; one or more control devices that operate on the one or more multi-level quantum subsystems according to one or more respective control parameters that relate to a parameter of a physical environment in which the multi-level quantum subsystems are located; initializing the quantum system in an initial quantum state, wherein an initial set of control parameters form a parameterization that defines the initial quantum state; obtaining one or more quantum system observables and one or more target quantum states; and iteratively training until an occurrence of a completion event.
    Type: Application
    Filed: June 4, 2021
    Publication date: September 23, 2021
    Inventors: Ryan Babbush, Hartmut Neven
  • Patent number: 11113620
    Abstract: Methods and apparatus for enhancing simulated annealing with quantum fluctuations. In one aspect, a method includes obtaining an input state; performing simulated annealing on the input state with a temperature reduction schedule until a decrease in energy is below a first minimum value; terminating the simulated annealing in response to determining that the decrease in energy is below the first minimum level; outputting a first evolved state and first temperature value; reducing the temperature to a minimum temperature value; performing quantum annealing on the first evolved state with a transversal field increase schedule until a completion of a second event occurs; terminating the quantum annealing in response to determining that a completion of the second event has occurred; outputting a second evolved state as a subsequent input state for the simulated annealing, and determining that the completion of the first event has occurred.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: September 7, 2021
    Assignee: Google LLC
    Inventor: Hartmut Neven
  • Publication number: 20210224680
    Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for constructing and programming quantum hardware for quantum annealing processes.
    Type: Application
    Filed: January 14, 2021
    Publication date: July 22, 2021
    Inventors: Masoud Mohseni, Hartmut Neven
  • Patent number: 11055627
    Abstract: Methods, systems, and apparatus for implementing a unitary quantum gate on one or more qubits. In one aspect, a method includes the actions designing a control pulse for the unitary quantum gate, comprising: defining a universal quantum control cost function, wherein the control cost function comprises a qubit leakage penalty term representing i) coherent qubit leakage, and ii) incoherent qubit leakage across all frequency components during a time dependent Hamiltonian evolution that realizes the unitary quantum gate; adjusting parameters of the time dependent Hamiltonian evolution to vary a control cost according to the control cost function such that leakage errors are reduced; generating the control pulse using the adjusted parameters; and applying the control pulse to the one or more qubits to implement the unitary quantum gate.
    Type: Grant
    Filed: January 31, 2018
    Date of Patent: July 6, 2021
    Assignee: Google LLC
    Inventors: Yuezhen Niu, Hartmut Neven, Vadim Smelyanskiy, Sergio Boixo Castrillo
  • Patent number: 11055626
    Abstract: Methods, systems, and apparatus for training quantum evolutions using sub-logical controls. In one aspect, a method includes the actions of accessing quantum hardware, wherein the quantum hardware includes a quantum system comprising one or more multi-level quantum subsystems; one or more control devices that operate on the one or more multi-level quantum subsystems according to one or more respective control parameters that relate to a parameter of a physical environment in which the multi-level quantum subsystems are located; initializing the quantum system in an initial quantum state, wherein an initial set of control parameters form a parameterization that defines the initial quantum state; obtaining one or more quantum system observables and one or more target quantum states; and iteratively training until an occurrence of a completion event.
    Type: Grant
    Filed: March 15, 2019
    Date of Patent: July 6, 2021
    Assignee: Google LLC
    Inventors: Ryan Babbush, Hartmut Neven
  • Patent number: 11030548
    Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for using a quantum oracle to make inference in complex machine learning models that is capable of solving artificial intelligent problems. Input to the quantum oracle is derived from the training data and the model parameters, which maps at least part of the interactions of interconnected units of the model to the interactions of qubits in the quantum oracle. The output of the quantum oracle is used to determine values used to compute loss function values or loss function gradient values or both during a training process.
    Type: Grant
    Filed: May 15, 2019
    Date of Patent: June 8, 2021
    Assignee: Google LLC
    Inventors: Nan Ding, Masoud Mohseni, Hartmut Neven
  • Publication number: 20210141827
    Abstract: A system and method of identifying objects is provided. In one aspect, the system and method includes a hand-held device with a display, camera and processor. As the camera captures images and displays them on the display, the processor compares the information retrieved in connection with one image with information retrieved in connection with subsequent images. The processor uses the result of such comparison to determine the object that is likely to be of greatest interest to the user. The display simultaneously displays the images the images as they are captured, the location of the object in an image, and information retrieved for the object.
    Type: Application
    Filed: January 25, 2021
    Publication date: May 13, 2021
    Inventors: David Petrou, Matthew J. Bridges, Shailesh Nalawadi, Hartwig Adam, Matthew R. Casey, Hartmut Neven, Andrew Harp
  • Publication number: 20210117847
    Abstract: Among other things, an apparatus comprises quantum units; and couplers among the quantum units. Each coupler is configured to couple a pair of quantum units according to a quantum Hamiltonian characterizing the quantum units and the couplers. The quantum Hamiltonian includes quantum annealer Hamiltonian and a quantum governor Hamiltonian. The quantum annealer Hamiltonian includes information bearing degrees of freedom. The quantum governor Hamiltonian includes non-information bearing degrees of freedom that are engineered to steer the dissipative dynamics of information bearing degrees of freedom.
    Type: Application
    Filed: December 8, 2020
    Publication date: April 22, 2021
    Inventors: Masoud Mohseni, Hartmut Neven
  • Patent number: 10922619
    Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for constructing and programming quantum hardware for quantum annealing processes.
    Type: Grant
    Filed: August 19, 2020
    Date of Patent: February 16, 2021
    Assignee: Google LLC
    Inventors: Masoud Mohseni, Hartmut Neven
  • Patent number: 10915832
    Abstract: Among other things, an apparatus comprises quantum units; and couplers among the quantum units. Each coupler is configured to couple a pair of quantum units according to a quantum Hamiltonian characterizing the quantum units and the couplers. The quantum Hamiltonian includes quantum annealer Hamiltonian and a quantum governor Hamiltonian. The quantum annealer Hamiltonian includes information bearing degrees of freedom. The quantum governor Hamiltonian includes non-information bearing degrees of freedom that are engineered to steer the dissipative dynamics of information bearing degrees of freedom.
    Type: Grant
    Filed: April 6, 2020
    Date of Patent: February 9, 2021
    Assignee: Google LLC
    Inventors: Masoud Mohseni, Hartmut Neven
  • Publication number: 20210035005
    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.
    Type: Application
    Filed: December 15, 2017
    Publication date: February 4, 2021
    Inventors: John Martinis, Yu Chen, Hartmut Neven, Dvir Kafri
  • Patent number: 10902055
    Abstract: A system and method of identifying objects is provided. In one aspect, the system and method includes a hand-held device with a display, camera and processor. As the camera captures images and displays them on the display, the processor compares the information retrieved in connection with one image with information retrieved in connection with subsequent images. The processor uses the result of such comparison to determine the object that is likely to be of greatest interest to the user. The display simultaneously displays the images the images as they are captured, the location of the object in an image, and information retrieved for the object.
    Type: Grant
    Filed: January 16, 2020
    Date of Patent: January 26, 2021
    Assignee: Google LLC
    Inventors: David Petrou, Matthew J. Bridges, Shailesh Nalawadi, Hartwig Adam, Matthew R. Casey, Hartmut Neven, Andrew Harp
  • Publication number: 20210004709
    Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for constructing and programming quantum hardware for quantum annealing processes.
    Type: Application
    Filed: August 19, 2020
    Publication date: January 7, 2021
    Inventors: Masoud Mohseni, Hartmut Neven
  • Publication number: 20200410343
    Abstract: Methods, systems, and apparatus for designing a quantum control trajectory for implementing a quantum gate using quantum hardware. In one aspect, a method includes the actions of representing the quantum gate as a sequence of control actions and applying a reinforcement learning model to iteratively adjust each control action in the sequence of control actions to determine a quantum control trajectory that implements the quantum gate and reduces leakage, infidelity and total runtime of the quantum gate to improve its robustness of performance against control noise during the iterative adjustments.
    Type: Application
    Filed: January 31, 2018
    Publication date: December 31, 2020
    Inventors: Yuezhen Niu, Hartmut Neven, Vadim Smelyanskiy, Sergio Boixo Castrillo
  • Publication number: 20200364602
    Abstract: Methods, systems, and apparatus for implementing a unitary quantum gate on one or more qubits. In one aspect, a method includes the actions designing a control pulse for the unitary quantum gate, comprising: defining a universal quantum control cost function, wherein the control cost function comprises a qubit leakage penalty term representing i) coherent qubit leakage, and incoherent qubit leakage across all frequency components during a time dependent Hamiltonian evolution that realizes the unitary quantum gate; adjusting parameters of the time dependent Hamiltonian evolution to vary a control cost according to the control cost function such that leakage errors are reduced; generating the control pulse using the adjusted parameters; and applying the control pulse to the one or more qubits to implement the unitary quantum gate.
    Type: Application
    Filed: January 31, 2018
    Publication date: November 19, 2020
    Inventors: Yuezhen Niu, Hartmut Neven, Vadim Smelyanskiy, Sergio Boixo Castrillo
  • Patent number: 10832156
    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.
    Type: Grant
    Filed: December 30, 2016
    Date of Patent: November 10, 2020
    Assignee: Google LLC
    Inventors: Yu Chen, Hartmut Neven, Austin Greig Fowler, Alireza Shabani Barzegar
  • Publication number: 20200342345
    Abstract: This disclosure relates to classification methods that can be implemented on quantum computing systems. According to a first aspect, this specification describes a method for training a classifier implemented on a quantum computer, the method comprising: preparing a plurality of qubits in an input state with a known classification, said plurality of qubits comprising one or more readout qubits; applying one or more parameterised quantum gates to the plurality of qubits to transform the input state to an output state; determining, using a readout state of the one or more readout qubits in the output state, a predicted classification of the input state; comparing the predicted classification with the known classification; and updating one or more parameters of the parameterised quantum gates in dependence on the comparison of the predicted classification with the known classification.
    Type: Application
    Filed: January 16, 2019
    Publication date: October 29, 2020
    Inventors: Edward Henry Farhi, Hartmut Neven
  • Publication number: 20200334564
    Abstract: Methods and apparatus for performing quantum annealing using a quantum system. In one aspect, a method includes controlling the quantum system such that a total Hamiltonian characterizing the quantum system evolves from an initial quantum Hamiltonian to a problem quantum Hamiltonian, wherein controlling the quantum system comprises applying an inhomogeneous driving field to the quantum system to drive the quantum system across a quantum phase transition.
    Type: Application
    Filed: December 28, 2018
    Publication date: October 22, 2020
    Inventors: Masoud Mohseni, Hartmut Neven
  • Patent number: 10789541
    Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for constructing and programming quantum hardware for quantum annealing processes.
    Type: Grant
    Filed: April 20, 2020
    Date of Patent: September 29, 2020
    Assignee: Google LLC
    Inventors: Masoud Mohseni, Hartmut Neven
  • Patent number: 10755194
    Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for constructing and programming quantum hardware for quantum annealing processes.
    Type: Grant
    Filed: November 13, 2019
    Date of Patent: August 25, 2020
    Assignee: Google LLC
    Inventors: Masoud Mohseni, Hartmut Neven