公开(公告)号：US20220197764A1

公开(公告)日：2022-06-23

申请号：US17542324

申请日：2021-12-03

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： SUNGIK JUN ,  Kwang-Won KOH ,  Kang Ho KIM ,  Changdae KIM ,  Taehoon KIM

IPC: G06F11/22 ,  G06F11/26 ,  G06N10/00

Abstract: Disclosed is a quantum diagnostic circuit, which includes an input unit having an input of at least first to fourth qubits, a diagnostic circuit unit receiving the first to fourth qubits from the input unit and providing a quantum superposition and a quantum entanglement, and an output unit receiving an output of the diagnostic circuit unit and determining whether the output is in a Bell-state, and the diagnostic circuit unit includes a Hadamard gate processing the first qubit to provide the quantum superposition of the first to fourth qubits, a first CNOT gate providing the quantum entanglement between an output of the Hadamard gate and the second qubit, a second CNOT gate providing the quantum entanglement between an output of the first CNOT gate and the third qubit, and a third CNOT gate providing the quantum entanglement between an output of the second CNOT gate and the fourth qubit.