TensoredOp

class TensoredOp(oplist, coeff=1.0, abelian=False)

기반 클래스: 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.

매개변수

• 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.
to_matrix	Return NumPy representation of the Operator.

Attributes

INDENTATION = '  '

abelian

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

반환 형식

bool

반환

A bool indicating whether the oplist is Abelian.

coeff

The scalar coefficient multiplying the Operator.

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Union[complex, ParameterExpression]

반환

The coefficient.

coeffs

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

반환 형식

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.

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Callable

반환

The combination function.

distributive

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bool

grad_combo_fn

The gradient of combo_fn.

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Optional[Callable]

instance_id

Return the unique instance id.

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int

num_qubits

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int

oplist

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

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List[OperatorBase]

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The Operators defining the ListOp

parameters

settings

Return settings.

반환 형식

Dict