公开(公告)号：US20250045617A1

公开(公告)日：2025-02-06

申请号：US18786131

申请日：2024-07-26

Applicant: POSTECH RESEARCH AND BUSINESS DEVELOPMENT FOUNDATION

Inventor： Jae Yoon SIM ,  Dong Gyu MINN

IPC: G06N10/40

Abstract: Provided is a qubit state reading apparatus including a probe signal provider configured to provide a probe signal to a qubit and a readout module configured to receive a qubit signal output from the qubit to which the probe signal is provided and read a state of the qubit, in which the readout module includes a local oscillation (LO) signal generator configured to generate an LO signal, a mixer configured to down-convert the qubit signal using the LO signal, an accumulator configured to accumulate output signals of the mixer, and a comparator configured to compare an output signal of the accumulator with a threshold and output a signal corresponding to the state of the qubit, and the readout module down-converts the qubit signal and the LO signal in a homodyne manner.