Patent ID: 11941488
Assignee: GOOGLE LLC
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 19:
20. The apparatus of claim 14, wherein:
uncomputing the controlled adder operation on the first, second and third qubits;
performing a CNOT operation between the first qubit and the third qubit, wherein the first qubit acts as the control;
performing a CNOT operation between the second qubit and the third qubit, wherein the second qubit acts as the control, comprises:
performing a CNOT operation on the first qubit and the fourth qubit, wherein the first qubit acts as the control;
un-computing a logical AND operation between the second and third qubits; and
performing a CNOT operation on the second qubit and the third qubit, wherein the second qubit acts as the control; and
performing a multi target CNOT operation on the first, second and third qubits, wherein the first qubit acts as the control.