From 16f845ebdb91ba855d2817d8d09082c2b4829864 Mon Sep 17 00:00:00 2001
From: Hiroshi Horii <horii@jp.ibm.com>
Date: Thu, 22 Aug 2024 19:15:42 +0900
Subject: [PATCH] deprecate primitives V1

---
 qiskit_aer/primitives/estimator.py                          | 4 ++++
 qiskit_aer/primitives/sampler.py                            | 5 +++++
 .../notes/deprecate_primitives_v1-97e89e7809c3ef9d.yaml     | 6 ++++++
 3 files changed, 15 insertions(+)
 create mode 100644 releasenotes/notes/deprecate_primitives_v1-97e89e7809c3ef9d.yaml

diff --git a/qiskit_aer/primitives/estimator.py b/qiskit_aer/primitives/estimator.py
index 139ea17869..402dead492 100644
--- a/qiskit_aer/primitives/estimator.py
+++ b/qiskit_aer/primitives/estimator.py
@@ -75,6 +75,10 @@ class Estimator(BaseEstimator):
           normal distribution approximation.
     """
 
+    @deprecate_func(
+        since="1.5",
+        additional_msg="Estimator(V1) has been deprecated in favor of EstimatorV2.",
+    )
     def __init__(
         self,
         *,
diff --git a/qiskit_aer/primitives/sampler.py b/qiskit_aer/primitives/sampler.py
index 7a97a9c4c8..a89d0f0c5d 100644
--- a/qiskit_aer/primitives/sampler.py
+++ b/qiskit_aer/primitives/sampler.py
@@ -25,6 +25,7 @@
 from qiskit.primitives import BaseSamplerV1, SamplerResult
 from qiskit.primitives.utils import final_measurement_mapping, init_circuit
 from qiskit.result import QuasiDistribution
+from qiskit.utils.deprecation import deprecate_func
 
 from .. import AerSimulator
 
@@ -51,6 +52,10 @@ class Sampler(BaseSamplerV1):
         4. default.
     """
 
+    @deprecate_func(
+        since="1.5",
+        additional_msg="Sampler(V1) has been deprecated in favor of SamplerV2.",
+    )
     def __init__(
         self,
         *,
diff --git a/releasenotes/notes/deprecate_primitives_v1-97e89e7809c3ef9d.yaml b/releasenotes/notes/deprecate_primitives_v1-97e89e7809c3ef9d.yaml
new file mode 100644
index 0000000000..1bb530d012
--- /dev/null
+++ b/releasenotes/notes/deprecate_primitives_v1-97e89e7809c3ef9d.yaml
@@ -0,0 +1,6 @@
+---
+deprecations:
+  - |
+    Primitives V1 (``Sampler`` and ``Estimator`` in `qiskit_aer.primitives`
+    has been deprecated and ``SamplerV2`` and ``EstimatorV2`` are recommended
+    as their successors.