qml.estimator.templates.OutOfPlaceSquare¶

class OutOfPlaceSquare(register_size, wires=None)[source]

Bases: ResourceOperator

Resource class for the OutofPlaceSquare gate.

Parameters:

register_size (int) – the size of the input register
wires (Sequence[int], None) – the wires the operation acts on

Resources:: The resources are obtained from appendix G, lemma 7 in PRX Quantum, 2, 040332 (2021). Specifically, the resources are given as \((n - 1)^2\) Toffoli gates, and \(n\) CNOT gates, where \(n\) is the size of the input register.

Example

The resources for this operation are computed using:

>>> import pennylane.estimator as qre
>>> out_square = qre.OutOfPlaceSquare(register_size=3)
>>> print(qre.estimate(out_square))
--- Resources: ---
Total wires: 9
    algorithmic wires: 9
    allocated wires: 0
    zero state: 0
    any state: 0
Total gates : 7
'Toffoli': 4,
'CNOT': 3

Attributes

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

resource_keys = {'register_size'}¶

resource_params¶

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

Returns:

A dictionary containing the resource parameters:

register_size (int): the size of the input register

Return type:

dict

Methods

`resource_decomp`(register_size)	Returns a list representing the resources of the operator.
`resource_rep`(register_size)	Returns a compressed representation containing only the parameters of the Operator that are needed to compute a resource estimation.

classmethod resource_decomp(register_size)[source]¶

Returns a list representing the resources of the operator. Each object in the list represents a gate and the number of times it occurs in the circuit.

Parameters:: register_size (int) – the size of the input register

Resources:: The resources are obtained from appendix G, lemma 7 in PRX Quantum, 2, 040332 (2021). Specifically, the resources are given as \((n - 1)^2\) Toffoli gates, and \(n\) CNOT gates.

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_rep(register_size)[source]¶

Returns a compressed representation containing only the parameters of the Operator that are needed to compute a resource estimation.

qml.estimator.templates.OutOfPlaceSquare¶

Attributes

Methods

Contents