QPU is a type of quantum chip based on superconducting materials. It uses superconducting qubits as the basic unit for quantum computation and has advantages such as long coherence time, fast operation speed, and high fidelity. Superconducting qubits are constructed from superconducting quantum circuits, which with superconducting Josephson junctions as the core. Due to the unique macroscopic quantum effects, superconducting qubits also known as "artificial atom". By using precisely designed pulse sequences, high-fidelity quantum logic gate operations can be achieved, and quantum algorithms can be completed.