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TensoredOp

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

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.

প্যারামিটার
  • 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.

রিটার্ন টাইপ

bool

রিটার্নস

A bool indicating whether the oplist is Abelian.

coeff

The scalar coefficient multiplying the Operator.

রিটার্ন টাইপ

Union[complex, ParameterExpression]

রিটার্নস

The coefficient.

coeffs

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

রিটার্ন টাইপ

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.

রিটার্ন টাইপ

Callable

রিটার্নস

The combination function.

distributive
রিটার্ন টাইপ

bool

grad_combo_fn

The gradient of combo_fn.

রিটার্ন টাইপ

Optional[Callable]

instance_id

Return the unique instance id.

রিটার্ন টাইপ

int

num_qubits
রিটার্ন টাইপ

int

oplist

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

রিটার্ন টাইপ

List[OperatorBase]

রিটার্নস

The Operators defining the ListOp

parameters
settings

Return settings.

রিটার্ন টাইপ

Dict