Quantum computing task processing method and system and computer device

A hybrid computer system comprising:

• a quantum computing device including a parameterized quantum circuit, a control device, and a classical computer, wherein:
• the control device is configured to control the quantum computing device to execute the parameterized quantum circuit corresponding to a target quantum computing task, so as to perform transformation processing on input quantum states of n+m qubits, the n+m qubits comprising n task bits and m auxiliary bits, and n and m being positive integers;
• the control device is configured to measure output quantum states of the n+m qubits to obtain a bit string of the n+m qubits;
• the classical computer is configured to update parameters of the parameterized quantum circuit based on output quantum states of the n task bits when an auxiliary substring in the bit string satisfies a post-selection condition and the parameterized quantum circuit has not converged, the auxiliary substring being a substring corresponding to the m auxiliary bits in the bit string;
• and
• the classical computer is further configured to obtain a computing result of the target quantum computing task based on the output quantum states of the n task bits when the auxiliary substring in the bit string satisfies the post-selection condition and the parameterized quantum circuit has converged.

One or more non-transitory computer-readable storage media, storing one or more computer programs, the one or more computer programs, when loaded and executed by a computer device, causing the computer device to implement:

• performing transformation processing on input quantum states of n+m qubits through a parameterized quantum circuit corresponding to a target quantum computing task, the n+m qubits comprising n task bits and m auxiliary bits, and n and m being positive integers;
• measuring output quantum states of the n+m qubits to obtain a bit string of the n+m qubits;
• updating parameters of the parameterized quantum circuit based on output quantum states of the n task bits when an auxiliary substring in the bit string satisfies a post-selection condition and the parameterized quantum circuit has not converged, the auxiliary substring being a substring corresponding to the m auxiliary bits in the bit string;
• and
• obtaining a computing result of the target quantum computing task based on the output quantum states of the n task bits when the auxiliary substring in the bit string satisfies the post-selection condition and the parameterized quantum circuit has converged.