公开(公告)号：US20250124322A1

公开(公告)日：2025-04-17

申请号：US18907113

申请日：2024-10-04

Applicant: IonQ, Inc.

Inventor： Jeremy SAGE ,  Jonathan MIZRAHI

IPC: G06N10/40

Abstract: Aspects of the present disclosure relate generally to systems and methods for use in the implementation and/or operation of quantum information processing (QIP) systems, and more particularly, for background-free qubit measurement. In some aspects, a method includes controlling a photon source oriented to direct photons towards ion(s) in an ion trap to produce photons having a first wavelength for a first time period; stopping the photon source from producing photons having the first wavelength; activating a photon detector configured to detect photons having the first wavelength; controlling the photon source to produce photons having a second wavelength different than the first wavelength for a second time period; detecting photons having the first wavelength during the second time period; and determining, based on detection of photons having the first wavelength during the second time period, that at least one of the one or more ions is in a |1> state.