quantlop
========

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   High-performance quantum simulation for matrix-free Hamiltonian evolution

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   .. grid-item-card:: Matrix-free
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      Apply Pauli words directly to the state vector and avoid storing
      the exponentially large Hamiltonian matrix.

   .. grid-item-card:: Krylov-powered
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      Approximate time evolution through the action of the matrix exponential,
      using a numerical method designed for large sparse problems.

   .. grid-item-card:: Multi-threaded
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      Run serially by default or enable OpenMP execution with an explicit
      thread count or ``num_threads="auto"``.


Explore the documentation
-------------------------

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   .. grid-item-card:: Getting started
      :link: getting-started
      :link-type: doc
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      Install ``quantlop`` and run your first matrix-free simulation.

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      Start here →

   .. grid-item-card:: User guide
      :link: user-guide
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      Learn the concepts and workflows behind Hamiltonian evolution.

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      Read the guide →

   .. grid-item-card:: API reference
      :link: api-reference
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      Browse the Python interface for Pauli words, Hamiltonians, and evolution.

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      Browse the API →

   .. grid-item-card:: Development
      :link: development
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      Build from source, run the test suite, and contribute to the project.

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      Contribute →


.. toctree::
   :maxdepth: 2
   :caption: Documentation
   :hidden:

   getting-started
   user-guide
   api-reference
   development