PauliMatrices

class PauliMatrices(num_qudits)

Bases: Sequence[complex128]

Pauli group of matrices.

A PauliMatrices object represents the entire of set of Pauli matrices for some number of qubits.

__init__(num_qudits)

Construct the Pauli group for num_qudits number of qubits.

Parameters:

num_qudits (int) – Power of the tensor product of the Pauli group.

Raises:

ValueError – If num_qudits is less than or equal to 0.

Attributes

I	The Identity Matrix.
X	The Pauli X Matrix.
Y	The Pauli Y Matrix.
Z	The Pauli Z Matrix.
numpy	The NumPy array holding the pauli matrices.

Methods

count(value)
dot_product(alpha)	Computes the standard dot product of alpha with the paulis.
from_string(pauli_string)	Construct pauli matrices from a string description.
get_projection_matrices(q_set)	Return the Pauli matrices that act only on qubits in q_set.
index(value, [start, [stop]])	Raises ValueError if the value is not present.