ModuleNotFoundError: Unable to import 'AerSimulator' from qiskit.providers.aer on macOS

[raviraja1218]

Informations

• Qiskit Aer version:0.16.0
• Python version:3.10.11
• Operating system:macOS 14.x (ARM64)

What is the current behavior?

Importing the AerSimulator module from qiskit.providers.aer results in a ModuleNotFoundError, despite qiskit-aer being successfully installed and listed as a requirement.

Error:

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ModuleNotFoundError: No module named 'qiskit.providers.aer'
This issue persists even after trying to reinstall the qiskit-aer package with various options (e.g., --no-binary, source install, and prebuilt wheels). The qiskit.providers directory in the installed package does not include the aer submodule.

Steps to reproduce the problem

Create a new virtual environment with Python 3.10.11:

bash
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python3.10 -m venv .venv
source .venv/bin/activate
Install Qiskit and Qiskit Aer:

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pip install qiskit qiskit-aer
Run the following Python script:

python
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from qiskit.providers.aer import AerSimulator
Observe the ModuleNotFoundError:

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ModuleNotFoundError: No module named 'qiskit.providers.aer'

What is the expected behavior?

The AerSimulator should be imported successfully, allowing simulation of quantum circuits using Aer.

Suggested solutions

Verify Installation Directory:
Check if the qiskit.providers.aer submodule is missing from the installation directory.
Go to:
bash
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cd /Users/raviraja/PycharmProjects/Q cryptography/.venv/lib/python3.10/site-packages/qiskit/providers/
ls
If aer is missing, it indicates a failed or incomplete installation.

[jakelishman]

qiskit.providers.aer was deprecated and removed over a year ago. Change your imports to from qiskit_aer import ...