Method for Determining Fidelity of Qubit Gate in Quantum Processor, and Storage Medium

A method for determining fidelity of a qubit gate in a quantum processor, comprising:

• acquiring, by invoking a first interface, environmental qubit gates associated with a two-qubit gate in the quantum processor, wherein the first interface comprises a first parameter, a parameter value of the first parameter involves the two-qubit gate and the environmental qubit gates, wherein the two-qubit gate interacts with the environmental qubit gates in the quantum processor;
• determining a fidelity error of the environmental qubit gates based on a fidelity error of the two-qubit gate;
• determining frequency of the environmental qubit gates based on the fidelity error of the environmental qubit gates;
• determining fidelity of the two-qubit gate based on the frequency of the environmental qubit gates;
• and
• outputting, by invoking a second interface, the fidelity of the two-qubit gate, wherein the second interface comprises a second parameter, and a parameter value of the second parameter represents the fidelity of the two-qubit gate.

A method for determining fidelity of a qubit gate in a quantum processor, comprising:

• acquiring, from a quantum platform, environmental qubit gates associated with a two-qubit gate in the quantum processor, wherein the two-qubit gate interacts with the environmental qubit gates in the quantum processor;
• determining a fidelity error of the environmental qubit gates based on a fidelity error of the two-qubit gate;
• determining frequency of the environmental qubit gates based on the fidelity error of the environmental qubit gates;
• determining fidelity of the two-qubit gate based on the frequency of the environmental qubit gates;
• and
• returning the fidelity of the two-qubit gate to the quantum platform.