Quantum TEA's python tensor network library
Project description
qtealeaves
The qtealeaves library of Quantum TEA contains tensor network representation as python classes, e.g., MPS, TTN, LPTN, and TTO. qtealeaves is the API for building quantum models in Quantum TEA and has for example a single-tensor update ground state search for TTNs. Moreover, qtealeaves is backbone for running quantum circuits via Quantum matcha TEA and the frontend for the fortran backend running Quantum Green TEA, i.e., solving the Schrödinger equation.
Documentation
Here is the documentation. The documentation can also be built locally via sphinx.
License
The project qtealeaves
is hosted at the repository
https://baltig.infn.it/quantum_tea_leaves/py_api_quantum_tea_leaves.git
,
and is licensed under the following license:
The license applies to the files of this project as indicated in the header of each file, but not its dependencies.
Installation
Independent of the use-case, you have to install the dependencies. Then, there are the options using it as a stand-alone package, within quantum matcha TEA, or for quantum green TEA.
Local installation via pip
The package is available via PyPi and pip install qtealeaves
.
After cloning the repository, an local installation via pip is
also possible via pip install .
.
Dependencies
The python dependencies can be found in the requirements.txt
and are required independently of the following use-cases.
The qtealeaves
package comes with the abstract definition of the tensor
required for our tensor networks as well as with a dense tensor based on
numpy and cupy. This tensor allows one to run simulations without symmetry
on CPU and GPU. Other tensor for symmetries or using pytorch instead of
numpy/cupy will become available in the future via Quantum Red TEA (qredtea).
Stand-alone package
If you are looking to explore small exact diagonalization examples, want to run a single-tensor update ground state search with TTNs, or have TN-states on files to be post-processed, you are ready to go.
qmatchatea simulations
Quantum circuit simulations via qmatchatea have qtealeaves as a dependency. Follow the instructions to install qmatchatea to get the right version of qtealeaves.
qgreentea simulations
If you want to use the qgreentea toolchain with TTNs and aTTNS, you need to install qtealeaves under a matching version. qgreentea provides instructions which version is compatible; see installation instructions there. qgreentea is not yet public, but it will be made public step-by-step.
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