How to generate quantum circuit drawing?

[Farooq Khaleel]

Dear Respected Members of the Group,

I hope you are doing well.

I am trying to reproduce the results of the following post:

https://nbviewer.ipython.org/github/qutip/qutip-notebooks/blob/master/examples/quantum-gates.ipynb#Gates-in-QuTiP-and-their-representation

in windows 10 environment and with Imagemagick, perl, Ghostscript and Latex are all installed and verified.

However, it seems like it cant generate the qcirc.pdf file. I receive the following error,

Warning (from warnings module):

  File "C:\Program Files (x86)\Python36-32\lib\site-packages\qutip_qip\circuit_latex.py", line 128

    warnings.warn("Could not locate system 'pdfcrop':"

UserWarning: Could not locate system 'pdfcrop': image output may have additional margins.

Traceback (most recent call last):

  File "C:\Users\msi-pc\Desktop\farrrrr.py", line 11, in <module>

    q.png

  File "C:\Program Files (x86)\Python36-32\lib\site-packages\qutip_qip\circuit.py", line 1821, in png

    return DisplayImage(self._raw_png(), embed=True)

  File "C:\Program Files (x86)\Python36-32\lib\site-packages\qutip_qip\circuit.py", line 1811, in _raw_png

    return _latex.image_from_latex(self.latex_code(), "png")

  File "C:\Program Files (x86)\Python36-32\lib\site-packages\qutip_qip\circuit_latex.py", line 245, in image_from_latex

    out = CONVERTERS[file_type](filename)

  File "C:\Program Files (x86)\Python36-32\lib\site-packages\qutip_qip\circuit_latex.py", line 180, in converter

    _run_command((which, *configuration.arguments, in_file, out_file))

  File "C:\Program Files (x86)\Python36-32\lib\site-packages\qutip_qip\circuit_latex.py", line 65, in _run_command

    raise RuntimeError(e.stderr.decode(sys.stderr.encoding)) from None

RuntimeError: magick: unable to open image 'qcirc.pdf': No such file or directory @ error/blob.c/OpenBlob/3537.

I kindly ask for your help with many thanks in advance.

Thank you very much

Yours sincerely,

[Nathan Shammah]

Dear Farooq,

Maybe it is worth to open an issue on qutip-qip about it, https://github.com/qutip/qutip-qip/ 

I'd say there is something off with ImageMagick, it happened to me I think in the past, but I cannot recall the solution. 

Bests, 

Nathan 

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Dr. Nathan Shammah

www.nathanshammah.com

[Farooq Khaleel]

Dear Dr. Nathan,

I hope you are doing well.

I hope you can remember how you fix it and tell me, please.

I am looking forward for other answers.

Thank you very much for your help.

Yours sincerely,

[Farooq Khaleel]

Dear Dr. Nathan,

I hope you are doing well.

Thank you very much for your advice.

The problem solved by BoxiLi at the link you provided for me.

Thank you very much for your help.

Yours sincerely,

[Nathan Shammah]

Hi Farooq,

I’m glad it got sorted out. Hope you can enjoy these tools as much as I do. 

Best wishes,

Nathan

To view this discussion on the web visit https://groups.google.com/d/msgid/qutip/a039838f-817a-4e9e-9281-5830097158f7n%40googlegroups.com.