VectorStateFn

class VectorStateFn(*args, **kwargs)

Bases: StateFn

Deprecated: A class for state functions and measurements which are defined in vector representation, and stored using Terra’s Statevector class.

Obsoleto desde a versão 0.24.0: The class qiskit.opflow.state_fns.vector_state_fn.VectorStateFn is deprecated as of qiskit-terra 0.24.0. It will be removed no earlier than 3 months after the release date. For code migration guidelines, visit https://qisk.it/opflow_migration.

Parâmetros

• primitive – The Statevector, NumPy array, or list, which defines the behavior of the underlying function.

• coeff – A coefficient multiplying the state function.

• is_measurement – Whether the StateFn is a measurement operator

Methods Defined Here

add	Return Operator addition of self and other, overloaded by +.
adjoint	Return a new Operator equal to the Operator's adjoint (conjugate transpose), overloaded by ~.
eval	Evaluate the Operator's underlying function, either on a binary string or another Operator.
permute	Permute the qubits of the state function.
primitive_strings	Return a set of strings describing the primitives contained in the Operator.
sample	Sample the state function as a normalized probability distribution.
tensor	Return tensor product between self and other, overloaded by ^.
to_circuit_op	Return StateFnCircuit corresponding to this StateFn.
to_density_matrix	Return matrix representing product of StateFn evaluated on pairs of basis states.
to_dict_fn	Creates the equivalent state function of type DictStateFn.
to_matrix	Return NumPy representation of the Operator.
to_matrix_op	Return a VectorStateFn for this StateFn.

Attributes

INDENTATION = '  '

coeff

A coefficient by which the state function is multiplied.

instance_id

Return the unique instance id.

is_measurement

Whether the StateFn object is a measurement Operator.

num_qubits

parameters

primitive: Statevector

The primitive which defines the behavior of the underlying State function.

settings

Return settings.