Geometrical effects on the downstream conductance in quantum-Hall--superconductor hybrid systems

By Anthony DAVID

Repository of the code used in the paper “Geometrical effects on the downstream conductance in quantum-Hall--superconductor hybrid systems” available on arXiv and published in Phys. Rev. B. A documentation of the code is available on Read the Docs.

Content description

• calculations.py: run calculations.
• manuscript_figures.py: generate manuscript figures.
• documentation: documentation of the code.
• files: data and plots generated by calculations.py.
• modules: python modules to run the simulations.
• figures: figures as used in the manuscript.

Installation and Usage

Here we explain how to run the scripts. After following the steps below try to run some calculations with the script calculations.py or reproduce the manuscript figures with the script manuscript_figures.py.

Miniconda, GitHub repository and conda environment

First install miniconda. Clone the repository, unzip it and and cd into the root directory 2deg_QH_SC-main from the terminal. Then create the Conda environment that contains all dependencies with

conda env create -f environment.yml

You can now use this environment to run the scripts. Below is detailed how to run the scripts using the command line, Pycharm or Visual Studio Code.

Running the scripts by using the command line

To run a script from the terminal use the following command line:

<path_to_python_exe> <path_to_python_script>

The python executable should be located at :

~/opt/miniconda3/envs/2deg_QH-SC/bin/python (macOS)

~/miniconda3/envs/2deg_QH-SC/bin/python (Linux)

~/miniconda3/envs/2deg_QH-SC/python (Windows)

For example, if you are on macOS and you want to run the script calculations.py (while being in the root directory of the repo), use

~/opt/miniconda3/envs/2deg_QH_SC/bin/python calculations.py

Note

You can use a global shell variable to create a shortcut to the Python executable path. For that, open a terminal and modify the bash configuration file (.bashrc, .bash_profile, or .profile) located in your HOME directory (the directory in which you are when you open the terminal). For example on macOS

nano .bash_profile

Add the following in the file

export mypython=~/opt/miniconda3/envs/2deg_QH-SC/bin/python

and save it with Ctrl+X and Y and Enter. Then close the terminal and open a new one to make the modification effective. You can now use the variable $mypython for the path such that the above example reads

$mypython calculations.py

Running the scripts by using PyCharm

With PyCharm you can follow these steps :

1. Launch PyCharm and choose Create New Project

2. Locate the project at the root directory 2deg_QH_SC-main.

3. Mark Existing interpreter (or Previously configured interpreter) and click on the selection icon ...

4. Select Conda Environment and choose the location of the python executable. It should be located at :

   /opt/miniconda3/envs/2deg_QH-SC/bin/python (macOS)

   /miniconda3/envs/2deg_QH-SC/bin/python (Linux)

   /miniconda3/envs/2deg_QH-SC/python (Windows)

5. Click on Ok then on Create and select Create from existing sources

6. You are ready to run the scripts!

7. (Optional) You can see progress bars during the calculations by activating the Emulate terminal in output console option. For that, got to Run->Edit Configurations and check the option.

Running the scripts by using Visual Studio Code

With Visual Studio Code you can follow these steps :

1. Launch Visual Studio Code and install the Python extension if it is not done yet.
2. From the main page choose Open... , select the root directory 2deg_QH_SC-main, and click on Yes, I trust the authors
3. Open the Command Palette with Ctrl+Shift+P, search Python: Select Interpreter and choose the one associated to the '2deg_QH-SC' environment.
4. You are ready to run the scripts!

Updating the documentation

The documentation directory contains a pdf and a local html version of the documentation. They can respectively be found at documentation/build/latex/2deg_qh-sc.pdf and documentation/build/html/index.html. You can update them by using

conda activate 2deg_QH-SC
cd documentation
make html
make latexpdf

Note

When you compile the documentation it runs the python scripts so make sure the calculations are commented before using make html or make latexpdf.

License

See the LICENSE file for license rights and limitations (MIT).