mindquantum.algorithm.nisq.generate_uccsd

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mindquantum.algorithm.nisq.generate_uccsd(molecular, threshold=0)[source]

Generate a uccsd quantum circuit based on a molecular data generated by Openfermion.

Parameters

  • molecular (Union[str, MolecularData]) – the name of the molecular data file, or openfermion MolecularData.

  • threshold (float) – the threshold to filter out the uccsd amplitude. We only keep the excitation operator with absolute value of amplitude greater than threshold, so that if threshold=0, we only keep excitation operator with non zero amplitude. Default: 0.

Returns

  • uccsd_circuit (Circuit), the ansatz circuit generated by uccsd method.

  • initial_amplitudes (numpy.ndarray), the initial parameter values of uccsd circuit.

  • parameters_name (list[str]), the name of initial parameters.

  • qubit_hamiltonian (QubitOperator), the hamiltonian of the molecule.

  • n_qubits (int), the number of qubits in simulation.

  • n_electrons (int), the number of electrons of the molecule.