Quantum circuit and quantum processor

A quantum processor, comprising a quantum circuit, wherein:

• the quantum circuit comprises:
• a qubit, a resonant cavity, and a feeder, the resonant cavity being coupled to the qubit, and the feeder being coupled to the qubit;
• the feeder is configured to feed an initialization signal to the qubit, the initialization signal being a modulation signal used for causing a frequency of the qubit to generate a vibration, wherein a modulation frequency of the initialization signal is determined according to a modulation order;
• and
• the vibration causes an equivalent state exchange to occur between the qubit and the resonant cavity, so as to enable a transition from an excited state of the qubit to a ground state by using the resonant cavity.

A method implemented by a quantum circuit, the quantum circuit comprising:

• a qubit, a resonant cavity, and a feeder, the resonant cavity being coupled to the qubit, and the feeder being coupled to the qubit, the method comprising:
• feeding, by the feeder, an initialization signal to the qubit, the initialization signal being a modulation signal used for causing a frequency of the qubit to generate a vibration, wherein a modulation Frequency of the initialization signal is determined according to a modulation order;
• and
• causing, by the vibration, an equivalent state exchange to occur between the qubit and the resonant cavity, so as to enable a transition from an excited state of the qubit to a ground state by using the resonant cavity.