qml.estimator.ops.CNOT¶

class CNOT(wires=None)[source]

Bases: ResourceOperator

Resource class for the CNOT gate.

Parameters:: wires (Sequence[int] | None) – the wires the operation acts on

Resources:: The CNOT gate is treated as a fundamental gate and thus it cannot be decomposed further. Requesting the resources of this gate raises a ResourcesUndefinedError error.

Attributes

`num_wires`
`resource_params`	Returns a dictionary containing the minimal information needed to compute the resources.

resource_params¶

Returns a dictionary containing the minimal information needed to compute the resources.

Returns:: Empty dictionary. The resources of this operation don’t depend on any additional parameters.
Return type:: dict

`adjoint_resource_decomp`([target_resource_params])	Returns a list representing the resources for the adjoint of the operator.
`controlled_resource_decomp`(num_ctrl_wires, ...)	Returns a list representing the resources for a controlled version of the operator.
`pow_resource_decomp`(pow_z[, ...])	Returns a list representing the resources for an operator raised to a power.
`resource_decomp`()	Returns a list representing the resources of the operator.
`resource_rep`()	Returns a compressed representation containing only the parameters of the operator that are needed to compute the resources.

classmethod adjoint_resource_decomp(target_resource_params=None)[source]¶

Returns a list representing the resources for the adjoint of the operator.

Parameters:: target_resource_params (dict | None) – A dictionary containing the resource parameters of the target operator.

Resources:: This operation is self-adjoint, so the resources of the adjoint operation results are same as the originial operation.

Returns:: A list of GateCount objects, where each object represents a specific quantum gate and the number of times it appears in the decomposition.
Return type:: list[GateCount]

classmethod controlled_resource_decomp(num_ctrl_wires, num_zero_ctrl, target_resource_params=None)[source]¶

Returns a list representing the resources for a controlled version of the operator.

Parameters:

num_ctrl_wires (int) – the number of qubits the operation is controlled on
num_zero_ctrl (int) – the number of control qubits, that are controlled when in the \(|0\rangle\) state
target_resource_params (dict | None) – A dictionary containing the resource parameters of the target operator.

Resources:: The resources are expressed as one general MultiControlledX gate.

Returns:: A list of GateCount objects, where each object represents a specific quantum gate and the number of times it appears in the decomposition.
Return type:: list[GateCount]

classmethod pow_resource_decomp(pow_z, target_resource_params=None)[source]¶

Returns a list representing the resources for an operator raised to a power.

Parameters:

pow_z (int) – the power that the operator is being raised to
target_resource_params (dict | None) – A dictionary containing the resource parameters of the target operator.

Resources:: This operation is self-inverse, thus when raised to even integer powers acts like the identity operator and raised to odd powers it produces itself.

Returns:: A list of GateCount objects, where each object represents a specific quantum gate and the number of times it appears in the decomposition.
Return type:: list[GateCount]

classmethod resource_decomp()[source]¶

Returns a list representing the resources of the operator.

Resources:: The CNOT gate is treated as a fundamental gate and thus it cannot be decomposed further. Requesting the resources of this gate raises a ResourcesUndefinedError error.

Raises:: ResourcesUndefinedError – This gate is fundamental, no further decomposition defined.

classmethod resource_rep()[source]¶

Returns a compressed representation containing only the parameters of the operator that are needed to compute the resources.