QUANTUM CIRCUIT SHIFTING PHASE OF TARGET QUBIT BASED ON CONTROL QUBIT

摘要

The present invention relates to a quantum circuit for shifting the phase of a target quantum bit, or qubit by /2^(n-1) based on a control qubit. According to an embodiment of the present invention, the quantum circuit includes a first sub-circuit, a rotary gate, and a second sub-circuit. The first sub-circuit converts a first qubit state into a second qubit state in accordance with the entanglement of a sub-qubit having a 0 state, a control qubit, and a target qubit. The rotary gate converts the second qubit state to a third qubit state by shifting the phase of the base state of a part of the second qubit state by /2^(n-1). The second sub-circuit converts the third qubit state to a fourth qubit state by shifting the phase of the target qubit by /2^(n-1). According to the present invention, the quantum circuit can reduce the number of base gates while using the sub-qubits to reduce the resource and operation time of quantum computing.;COPYRIGHT KIPO 2019