Patent ID: 11900220
Assignee: ORIGIN QUANTUM COMPUTING TECHNOLOGY (HEFEI) CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G  Y | IPC G

Claim 3:
4. The method for amplitude estimation according to claim 3, wherein the step of calculating a second difference value between a next angle upper limit value and a next angle lower limit value of the to-be-estimated amplitude based on the current angle upper limit value, the current angle lower limit value, the next angle amplification factor, the next flag parameter, and a measurement result of the target quantum state comprises:
calculating, according to a triangular transformation formula and based on the next flag parameter, and the frequency confidence interval, an angle confidence interval corresponding to a current angle;
determining the next angle upper limit value based on an upper limit value corresponding to the angle confidence interval, the current angle upper limit value, and the next angle amplification factor;
determining the next angle lower limit value based on a lower limit value corresponding to the angle confidence interval, the current angle lower limit value, and the next angle amplification factor; and
calculating the second difference value between the next angle upper limit value and the next angle lower limit value of the to-be-estimated amplitude.