Z2Symmetries

class Z2Symmetries(symmetries, sq_paulis, sq_list, tapering_values=None)

Bases: object

Z2 Symmetries

Parameters

• symmetries (list[Pauli]) – the list of Pauli objects representing the Z_2 symmetries

• sq_paulis (list[Pauli]) – the list of single - qubit Pauli objects to construct the Clifford operators

• sq_list (list[int]) – the list of support of the single-qubit Pauli objects used to build the Clifford operators

• tapering_values (list[int], optional) – values determines the sector.

Raises

AquaError – Invalid paulis

Methods

consistent_tapering	Tapering the operator with the same manner of how this tapered operator is created.
copy	Get a copy of self.
find_Z2_symmetries	Finds Z2 Pauli-type symmetries of an Operator.
is_empty	Check the z2_symmetries is empty or not.
taper	Taper an operator based on the z2_symmetries info and sector defined by tapering_values.
two_qubit_reduction	Eliminates the central and last qubit in a list of Pauli that has diagonal operators (Z,I) at those positions

Attributes

cliffords

Get clifford operators, build based on symmetries and single-qubit X.

Returns

a list of unitaries used to diagonalize the Hamiltonian.

Return type

list[WeightedPauliOperator]

sq_list

returns sq list

sq_paulis

returns sq paulis

symmetries

return symmetries

tapering_values

returns tapering values