Migrate and fix Optimal control tutorials from qutip-notebooks to qutip-tutorials

[rochisha0]

Migrate and update the Optimal Control tutorials from the qutip-notebooks repository to the qutip-tutorials repository. Ensure all tutorials are compatible with qutip-qtrl instead of the older qutip.control module. This involves revising code, validating outputs, and updating instructions to reflect changes functionality. It also removes the logging to make the tutorials more compact.

To do:

1. Change the notebooks title

[ajgpitch]

I checked the tutorials-v5/optimal-control/control-pulseoptim-Hadamard.ipynb and it imports qutip.control. This is not going work in v5. Needs to use qutip_qtrl.

[rochisha0]

@ajgpitch I have fixed this and added overview. I think we should figure out, which order we want these notebooks to appear. I can name them in that particular order to show in the website index.

[ajgpitch]

Definitely looking better now. Still focusing on the Hadamard example...

1. I thought at some point we planned to move (copy) the Hadamard gate function into the main package. It would be nice not to have to depend on qutip_qip - can we check if this is done?
2. It seems that this does not work with the current pip version of qutip-qtrl, do I need to install qutip_qtrl from Github?

[rochisha0]

I have removed the dependence on qutip_qip. It works for me using the current pip version of qutip_qtrl. @ajgpitch
Software Version
QuTiP 5.1.0.dev0+0b4260e
Numpy 1.26.4
SciPy 1.13.0
matplotlib 3.9.0
Number of CPUs 8
BLAS Info Generic
IPython 8.25.0
Python 3.12.3 | packaged by Anaconda, Inc. | (main, May 6 2024, 19:46:43) [GCC 11.2.0]
OS posix [linux]
Cython 3.0.10
Wed Jan 01 22:48:30 2025 IST

These are the versions I am using.

[rochisha0]

@ajgpitch I am not able to understand this error

E402 module level import not at top of file

Rest I think everything is fixed

[ajgpitch]

Maybe it is the empty lines in cell 1 and also perhaps %matplotlib inline can be moved after the imports.

[ajgpitch]

Suggest renames:

01-optimal-control-overview
02-cpo-GRAPE-Hadamard
03-cpo-GRAPE-QFT
04-cpo-GRAPE-Lindbladian
05-cpo-cpo-symplectic
06-CRAB-2qubit-state_to_state
07-CRAB-QFT

btw, it would be nice add state_to_state to the Hadamard example, perhaps first, showing transfer from |1> to |+> (or |0> to |+> , whichever one is the Hadamard, I can never remember), then show that Hadamard does the same.

[rochisha0]

@ajgpitch I have updated the names. I am thinking for making changes to the content, I can open other PR to integrate this nice idea and maybe more.

[ajgpitch]

Tests failing because links need updating in optimal-control-overview.md