公开(公告)号：US20230126123A1

公开(公告)日：2023-04-27

申请号：US17970943

申请日：2022-10-21

Applicant: Google LLC

Inventor： Bill Huggins ,  Jarrod Ryan McClean

IPC: G06N10/60 ,  G06N10/20

Abstract: Quantum computing systems and methods for determining a state of a physical system are provided. In some examples, a method can include obtaining a defined function associated with the physical system, the defined function encoding an estimated value of at least one property to be simulated by a quantum computing system as a gradient of the defined function. The method can include implementing a quantum circuit on a plurality of qubits in a quantum computing system to perform a quantum operation (e.g., the Gilyén quantum gradient algorithm) on the plurality of qubits. The quantum operation is operable to determine the gradient of the defined function. The method can include determining the estimated value for the at least one property based at least on at least one of the plurality of qubits after implementation of the quantum operation.