From 1bcfa75d514f27c6d02f49df8c960c3e24d10b6a Mon Sep 17 00:00:00 2001
From: Samuele Ferracin <sam.ferracin@ibm.com>
Date: Thu, 8 Aug 2024 15:08:04 -0400
Subject: [PATCH] Adding deprecation warnings for new noise learner format
 (#1848)

* json

* warnings

* revert

* 0.27.0

* release
---
 .../utils/noise_learner_result.py             | 28 +++++++++++++++++++
 release-notes/unreleased/1844.feat.rst        |  1 +
 2 files changed, 29 insertions(+)
 create mode 100644 release-notes/unreleased/1844.feat.rst

diff --git a/qiskit_ibm_runtime/utils/noise_learner_result.py b/qiskit_ibm_runtime/utils/noise_learner_result.py
index fe7549071..18191e93f 100644
--- a/qiskit_ibm_runtime/utils/noise_learner_result.py
+++ b/qiskit_ibm_runtime/utils/noise_learner_result.py
@@ -21,6 +21,8 @@
 from qiskit.circuit import QuantumCircuit
 from qiskit.quantum_info import PauliList
 
+from ..utils.deprecation import issue_deprecation_msg
+
 
 class PauliLindbladError:
     r"""A Pauli error channel generated by a Pauli Lindblad dissipators.
@@ -136,6 +138,32 @@ def error(self) -> PauliLindbladError:
         """
         return self._error
 
+    @property
+    def generators(self) -> PauliList:
+        r"""
+        (DEPRECATED) The Pauli Lindblad generators of the error channel in this :class:`.~LayerError`.
+        """
+        issue_deprecation_msg(
+            "The ``generators`` property is deprecated",
+            "0.27.0",
+            "Instead, you can access the generators through the ``error`` property.",
+            1,
+        )
+        return self.error.generators
+
+    @property
+    def rates(self) -> NDArray[np.float64]:
+        r"""
+        (DEPRECATED) The Lindblad generator rates of the error channel in this :class:`.~LayerError`.
+        """
+        issue_deprecation_msg(
+            "The ``rates`` property is deprecated",
+            "0.27.0",
+            "Instead, you can access the rates through the ``error`` property.",
+            1,
+        )
+        return self.error.rates
+
     @property
     def num_qubits(self) -> int:
         r"""
diff --git a/release-notes/unreleased/1844.feat.rst b/release-notes/unreleased/1844.feat.rst
new file mode 100644
index 000000000..42c027e6c
--- /dev/null
+++ b/release-notes/unreleased/1844.feat.rst
@@ -0,0 +1 @@
+Added ``PauliLindbladError`` and ``LayerError`` classes to represent layers noise processes.
\ No newline at end of file