Portuguese
Idiomas
English
Bengali
French
German
Japanese
Korean
Portuguese
Spanish
Tamil

TensoredOp

class TensoredOp(oplist, coeff=1.0, abelian=False)[código fonte]

Bases: ListOp

A class for lazily representing tensor products of Operators. Often Operators cannot be efficiently tensored to one another, but may be manipulated further so that they can be later. This class holds logic to indicate that the Operators in oplist are meant to be tensored together, and therefore if they reach a point in which they can be, such as after conversion to QuantumCircuits, they can be reduced by tensor product.

Parâmetros
  • oplist (List[OperatorBase]) – The Operators being tensored.

  • coeff (Union[complex, ParameterExpression]) – A coefficient multiplying the operator

  • abelian (bool) – Indicates whether the Operators in oplist are known to mutually commute.

Methods Defined Here

eval

Evaluate the Operator's underlying function, either on a binary string or another Operator.

reduce

Try collapsing the Operator structure, usually after some type of conversion, e.g.

tensor

Return tensor product between self and other, overloaded by ^.

to_circuit

Returns the quantum circuit, representing the tensored operator.

Attributes

INDENTATION = '  '
abelian

Whether the Operators in oplist are known to commute with one another.

Tipo de retorno

bool

Retorno

A bool indicating whether the oplist is Abelian.

coeff

The scalar coefficient multiplying the Operator.

Tipo de retorno

Union[complex, ParameterExpression]

Retorno

The coefficient.

coeffs

Return a list of the coefficients of the operators listed. Raises exception for nested Listops.

Tipo de retorno

List[Union[complex, ParameterExpression]]

combo_fn

The function defining how to combine oplist (or Numbers, or NumPy arrays) to produce the Operator’s underlying function. For example, SummedOp’s combination function is to add all of the Operators in oplist.

Tipo de retorno

Callable

Retorno

The combination function.

distributive
Tipo de retorno

bool

grad_combo_fn

The gradient of combo_fn.

Tipo de retorno

Optional[Callable]

instance_id

Return the unique instance id.

Tipo de retorno

int

num_qubits
Tipo de retorno

int

oplist

The list of OperatorBases defining the underlying function of this Operator.

Tipo de retorno

List[OperatorBase]

Retorno

The Operators defining the ListOp

parameters
settings

Return settings.

Tipo de retorno

Dict