refactor: use direct link to notebook

doc/source/code-examples/index.rst

@@ -1,15 +0,0 @@
-.. _examples:
-
-Code examples
-=============
-
-In this section we present code examples from basic to advanced features
-implemented in Qibotn.
-
-Introduction to backends
-^^^^^^^^^^^^^^^^^^^^^^^^
-
-.. toctree::
-    :maxdepth: 1
-
-    tutorials/qmatchatea_intro/qmatchatea_introduction.ipynb

doc/source/code-examples/introductions.rst

@@ -1,12 +0,0 @@
-.. _introductions:
-
-Introductory material
-=====================
-
-In this section we present some simple introduction to our backends.
-
-
-.. toctree::
-    :maxdepth: 1
-
-    tutorials/qmatchatea_intro/qmatchatea_intro.ipynb

doc/source/code-examples/tutorials/qmatchatea_intro/qmatchatea_introduction.ipynb

@@ -1 +0,0 @@
-../../../../../examples/qmatchatea_intro/qmatchatea_introduction.ipynb

doc/source/index.rst

@@ -25,7 +25,7 @@ As shown in the figure above, we currently support three different backends, whi
 correspond to the three mentioned packages:
    - `cuQuantum <https://github.com/NVIDIA/cuQuantum>`_: an NVIDIA SDK of optimized libraries and tools for accelerating quantum computing workflows (we refer to the specific `Cutensornet <https://docs.nvidia.com/cuda/cuquantum/latest/cutensornet/index.html>`_  library);
    - `quimb <https://quimb.readthedocs.io/en/latest/>`_: an easy but fast python library for ‘quantum information many-body’ calculations, focusing primarily on tensor networks;
-   - `Quantum Matcha Tea <https://www.quantumtea.it/>`_: a logical quantum computer emulator powered by matrix product states.
+   - `Quantum Matcha Tea <https://www.quantumtea.it/>`_: a logical quantum computer emulator powered by matrix product states. Read `here <https://github.com/qiboteam/qibotn/blob/restore/examples/qmatchatea_intro/qmatchatea_introduction.ipynb>`_ if you want to have an example on how using the Quantum Matcha Tea backend.
 
 ..  warning::
 
@@ -73,7 +73,6 @@ Contents
    :caption: Introduction
 
    getting-started/index
-   code-examples/index
 
 .. toctree::
     :maxdepth: 1

pyproject.toml

@@ -31,6 +31,7 @@ mpi4py = { version = "^3.1.5", optional = true }
 
 [tool.poetry.extras]
 cuda = ["cupy-cuda11x", "cuquantum-python-cu11", "mpi4py"]
+qmatchatea = ["qmatchatea"]
 
 [tool.poetry.group.docs]
 optional = true
@@ -41,7 +42,6 @@ furo = "^2023.3.27"
 sphinxcontrib-bibtex = "^2.5.0"
 sphinx-copybutton = "^0.5.2"
 sphinxcontrib-katex = "^0.9.9"
-nbsphinx = "^0.8.12"
 
 [tool.poetry.group.dev.dependencies]
 ipython = "^7.0.0"