Method and Apparatus for Evaluating Quantum Gate in Superconducting Circuit, Device and Storage Medium

An apparatus for evaluating a quantum gate in a superconducting circuit, comprising:

• a processor and a memory for storing one or more computer programs executable by the processor,
• wherein when executing at least one of the computer programs, the processor is configured to perform operations comprising:
• acquiring a Hamiltonian corresponding to a superconducting circuit structure, wherein the superconducting circuit structure comprises computation qubits and a coupler disposed between two of the computation qubits and coupled with the two of the computation qubits respectively, wherein a target quantum gate can be implemented based on the coupler and the computation qubits;
• performing decoupling processing for the coupler on the Hamiltonian to obtain the processed Hamiltonian representing a coupling strength between the computation qubits, wherein the coupling strength comprises a target coupling strength between the computation qubits for implementing the target quantum gate, and a parasitic coupling strength between the computation qubits which can cause a difference between the target quantum gate and a theoretical quantum gate;
• and
• obtaining, at least based on the processed Hamiltonian, a first data processing rule that takes circuit parameters of the superconducting circuit structure as input parameters, wherein a degree of difference between the target quantum gate implemented by the superconducting circuit structure and the theoretical quantum gate can be obtained based on the first data processing rule.