Invention Grant
- Patent Title: Efficient fault-tolerant trotter simulation of molecular hamiltonians
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Application No.: US17276668Application Date: 2019-08-13
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Publication No.: US12175328B2Publication Date: 2024-12-24
- Inventor: Craig Gidney , Ryan Babbush , Ian David Kivlichan
- Applicant: Google LLC
- Applicant Address: US CA Mountain View
- Assignee: Google LLC
- Current Assignee: Google LLC
- Current Assignee Address: US CA Mountain View
- Agency: Fish & Richardson P.C.
- International Application: PCT/US2019/046368 WO 20190813
- International Announcement: WO2020/091874 WO 20200507
- Main IPC: G06N10/00
- IPC: G06N10/00 ; H03K19/195 ; H03K19/20

Abstract:
Methods, systems and apparatus for determining properties of a physical system described by an electronic structure Hamiltonian. In one aspect, a Hamiltonian describing the physical system is transformed into a qubit Hamiltonian describing a corresponding system of qubits. The qubit Hamiltonian comprises multiple two-qubit interaction terms, each comprising a respective translation invariant coefficient. The system of qubits is evolved under a unitary operator generated by the multiple two-qubit interaction terms. The evolution includes applying layers of quantum logic gates to the system of qubits, wherein each application of a layer evolves the system of qubits under a unitary operator generated by a respective subset of the multiple two-qubit interaction terms and wherein the value of the coefficients of the subset of the multiple two-qubit interaction terms that generate the unitary operator is constant. The evolved system of qubits is measured and properties of the physical system is determined.
Public/Granted literature
- US20210272009A1 EFFICIENT FAULT-TOLERANT TROTTER SIMULATION OF MOLECULAR HAMILTONIANS Public/Granted day:2021-09-02
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