Source code for qiskit.quantum_info.operators.symplectic.pauli_utils
# This code is part of Qiskit.
# (C) Copyright IBM 2017, 2020
# This code is licensed under the Apache License, Version 2.0. You may
# obtain a copy of this license in the LICENSE.txt file in the root directory
# of this source tree or at http://www.apache.org/licenses/LICENSE-2.0.
# Any modifications or derivative works of this code must retain this
# copyright notice, and modified files need to carry a notice indicating
# that they have been altered from the originals.
PauliTable utility functions.
import numpy as np
from .pauli_table import PauliTable
[docs]def pauli_basis(num_qubits, weight=False):
"""Return the ordered PauliTable for the n-qubit Pauli basis.
num_qubits (int): number of qubits
weight (bool): if True optionally return the basis sorted by Pauli weight
rather than lexicographic order (Default: False)
PauliTable: the PauliTable for the basis
pauli_1q = PauliTable(np.array([[False, False],
if num_qubits == 1:
pauli = pauli_1q
for _ in range(num_qubits - 1):
pauli = pauli_1q.tensor(pauli)