Title:
量子ゲートを実現するための万能制御
Document Type and Number:
Japanese Patent JP7114718
Kind Code:
B2
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.
Inventors:
Niu, Yuechen
Neben, Hartmut
Smeryanski, Badim
Castrio, Sergio Baisho
Neben, Hartmut
Smeryanski, Badim
Castrio, Sergio Baisho
Application Number:
JP2020539088A
Publication Date:
August 08, 2022
Filing Date:
January 31, 2018
Export Citation:
Assignee:
Google LLC
International Classes:
G06N10/40
Other References:
P. Rebentrost ほか,"Optimal control of a leaking qubit",arXiv.org [online],arXiv:0808.2680v1,2008年,[2021年10月26日 検索], インターネット:
Attorney, Agent or Firm:
Patent Attorney Fukami Patent Office
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