# This code is part of Qiskit.

#

# (C) Copyright IBM 2021.

#

# 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.

"""

RZX based template for CX - RYGate - CX

.. parsed-literal::

┌────────┐ ┌─────────┐┌─────────┐┌──────────┐

q_0: ──■──┤ RY(-ϴ) ├──■──┤ RX(π/2) ├┤0 ├┤ RX(-π/2) ├

┌─┴─┐└────────┘┌─┴─┐└─────────┘│ RZX(ϴ) │└──────────┘

q_1: ┤ X ├──────────┤ X ├───────────┤1 ├────────────

└───┘ └───┘ └─────────┘

"""

from __future__ import annotations

import numpy as np

from qiskit.circuit import Parameter, QuantumCircuit

from qiskit.circuit.parameterexpression import ParameterValueType

def rzx_yz(theta: ParameterValueType | None = None):

return circ