AdaptVQE¶

class AdaptVQE(transformation, solver, threshold=1e-05, delta=1, max_iterations=None)[source]¶

Bases: qiskit.chemistry.algorithms.ground_state_solvers.ground_state_eigensolver.GroundStateEigensolver

A ground state calculation employing the AdaptVQE algorithm.

Parameters

transformation (FermionicTransformation) – a fermionic driver to operator transformation strategy.
solver (MinimumEigensolverFactory) – a factory for the VQE solver employing a UCCSD variational form.
threshold (float) – the energy convergence threshold. It has a minimum value of 1e-15.
delta (float) – the finite difference step size for the gradient computation. It has a minimum value of 1e-5.
max_iterations (Optional[int]) – the maximum number of iterations of the AdaptVQE algorithm.

Methods

`evaluate_operators`	Evaluates additional operators at the given state.
`returns_groundstate`	Whether the eigensolver returns the ground state or only ground state energy.
`solve`	Computes the ground state.

Attributes

solver¶

Returns the minimum eigensolver or factory.

transformation¶

Returns the transformation used to obtain a qubit operator from the molecule.