To install the package
qutip-qip from PyPI, use
pip install qutip-qip
As the Introduction suggested, this package is based on a module in the QuTiP package
If you were using the
qutip package and now want to try out the new features included in this package, you can simply install this package and replace all the
qutip.qip in your import statement with
qutip_qip. Everything should work smoothly as usual.
This package is built upon QuTiP, of which the installation guide can be found at on QuTiP Installation. The only difference is that C++ compilers are not required here since there is no run-time compiling for qutip-qip. The minimal Python version supported is Python 3.6.
In particular, following packages are necessary for running qutip-qip
numpy scipy cython qutip
The following to packages are used for plotting and testing:
sphinx numpydoc sphinx_rtd_theme
are used to build and test the documentation.
Additional software for Plotting Circuits¶
In order to plot circuits, the following non-Python packages are needed:
The circuit plotting function in QuTiP uses LaTeX and a few LaTeX packages including
For Linux and Mac :
You need to install a TeX distribution such as TeX Live. You can either install it through
brew or using their installer on the website.
If you would prefer to avoid installing the full
texlive distribution (which is a few Gigabyte large), this link
has some useful discussion on selectively installing part of the packages. In particular:
braketwill be installed as a part of
qcircuitwill be installed as a part of
pdflatexare installed when a minimal
Do not install
pdfcrop via pip because the package’s old dependencies will clash
with newer dependencies of other programs installed in the
For Windows :
We recommend installing MiKTeX, which will automatically install necessary packages like
qcircuit for you when it is used. It will only take a few more minutes in your first attempt at plotting a circuit.
In addition, you also need to install perl for
ImageMagick and Ghostscript¶
In order to display the circuit in Jupyter notebook, we need to convert it to png format. To do that, you will need to install Ghostscript and ImageMagick. The first is responsible for reading the pdf file while the second will convert it to png.
You might need to make changes to
policy.xml if the following error occurs :
RuntimeError: convert-im6.q16: not authorized `qcirc.pdf' @ error/constitute.c/ReadImage/412. convert-im6.q16: no images defined `qcirc.png' @ error/convert.c/ConvertImageCommand/3258.
The output of a circuit plot will be output in a Jupyter notebook. In your virtual environment, start a Jupyter notebook server and run your examples in a notebook. If you try to access a circuit plot in a terminal or IPython console, you will only be able to access the location of this image in your device’s memory.
To convert the circuit into svg format, you will need to install
Please visit their website for installation guide.
If you want to check whether all dependencies are installed,
see if the following three commands work correctly:
magick anypdf.pdf anypdf.png,
anypdf.pdf is any pdf file you have.
Install qutip-qip from source code¶
To install the package, download to source code from GitHub website and run
pip install .
under the directory containing the
If you want to edit the code, use instead
pip install -e .
To test the installation from a download of the source code, run from the qutip-qip directory