GroundStateSolver

class GroundStateSolver(qubit_mapper)

Bases: ABC

The ground state calculation interface.

Parámetros:

qubit_mapper (QubitMapper) – The QubitMapper instance that converts a second quantized operator to qubit operators.

Attributes

qubit_mapper

Returns the qubit mapper.

solver

Returns the solver.

Methods

abstract get_qubit_operators(problem, aux_operators=None)

Gets the operator and auxiliary operators, and transforms the provided auxiliary operators using a QubitMapper. If the user-provided aux_operators contain a name which clashes with an internally constructed auxiliary operator, then the corresponding internal operator will be overridden by the user-provided operator.

Parámetros:

• problem (BaseProblem) – A class encoding a problem defining the qubit operators.

• aux_operators (dict[str, qiskit_nature.second_q.operators.sparse_label_op.SparseLabelOp | qiskit.quantum_info.operators.symplectic.sparse_pauli_op.SparsePauliOp] | None) – Additional auxiliary operators to transform.

Devuelve:

A tuple with the main operator (hamiltonian) and a dictionary of auxiliary default and custom operators.

Tipo del valor devuelto:

tuple[qiskit.quantum_info.operators.symplectic.sparse_pauli_op.SparsePauliOp, dict[str, qiskit.quantum_info.operators.symplectic.sparse_pauli_op.SparsePauliOp] | None]

abstract solve(problem, aux_operators=None)

Compute the ground state energy of the molecule that was supplied via the driver.

Parámetros:

• problem (BaseProblem) – A class encoding a problem to be solved.

• aux_operators (dict[str, qiskit_nature.second_q.operators.sparse_label_op.SparseLabelOp | qiskit.quantum_info.operators.symplectic.sparse_pauli_op.SparsePauliOp] | None) – Additional auxiliary operators to evaluate.

Devuelve:

An interpreted EigenstateResult. For more information see also interpret().

Tipo del valor devuelto:

EigenstateResult

abstract supports_aux_operators()

Returns whether the eigensolver supports auxiliary operators.

Tipo del valor devuelto:

bool