A plugin allowing OpenFermion to interface with Psi4.
OpenFermion is an open source library (licensed under Apache 2) for compiling and analyzing quantum algorithms which simulate fermionic systems. This plugin library allows the electronic structure package Psi4 (licensed under GNU Lesser General Public License version 3) to interface with OpenFermion.
To start using OpenFermion-Psi4, first install Psi4. Note that Psi4 is designed specifically for the Anaconda python distribution. While it is possible to install Psi4 without Anaconda, if one does use Anaconda python the following commands will install Psi4 and pip (used to install OpenFermion-Psi4):
conda config --add channels http://conda.anaconda.org/psi4 python -m conda install psi4 python -m conda install pip
To install the latest versions of OpenFermion and OpenFermion-Psi4 (in development mode):
git clone https://github.com/quantumlib/OpenFermion-Psi4 cd OpenFermion-Psi4 python -m pip install -e .
Alternatively, to install the latest PyPI releases as libraries (in user mode):
python -m pip install --user openfermionpsi4
Also be sure to take a look at the ipython notebook demo.
How to contribute
We’d love to accept your contributions and patches to OpenFermion-Psi4. There are a few guidelines you need to follow. Contributions to OpenFermion-Psi4 must be accompanied by a Contributor License Agreement. You (or your employer) retain the copyright to your contribution, this simply gives us permission to use and redistribute your contributions as part of the project. Head over to https://cla.developers.google.com/ to see your current agreements on file or to sign a new one.
All submissions, including submissions by project members, require review. We use GitHub pull requests for this purpose. Consult GitHub Help for more information on using pull requests. Furthermore, please make sure your new code comes with extensive tests! We use automatic testing to make sure all pull requests pass tests and do not decrease overall test coverage by too much. Make sure you adhere to our style guide. Just have a look at our code for clues. We mostly follow PEP 8 and use the corresponding linter to check for it. Code should always come with documentation.
How to cite
When using OpenFermion-Psi4 for research projects, please cite:
Jarrod R. McClean, Ian D. Kivlichan, Kevin J. Sung, Damian S. Steiger, Yudong Cao, Chengyu Dai, E. Schuyler Fried, Craig Gidney, Brendan Gimby, Pranav Gokhale, Thomas Häner, Tarini Hardikar, Vojtĕch Havlíček, Cupjin Huang, Josh Izaac, Zhang Jiang, Xinle Liu, Matthew Neeley, Thomas O’Brien, Isil Ozfidan, Maxwell D. Radin, Jhonathan Romero, Nicholas Rubin, Nicolas P. D. Sawaya, Kanav Setia, Sukin Sim, Mark Steudtner, Qiming Sun, Wei Sun, Fang Zhang and Ryan Babbush. OpenFermion: The Electronic Structure Package for Quantum Computers. arXiv:1710.07629. 2017.
as well as
Robert M. Parrish, Lori A. Burns, Daniel G. A. Smith, Andrew C. Simmonett, A. Eugene DePrince III, Edward G. Hohenstein , Uğur Bozkaya, Alexander Yu. Sokolov, Roberto Di Remigio, Ryan M. Richard, Jérôme F. Gonthier, Andrew M. James, Harley R. McAlexander, Ashutosh Kumar, Masaaki Saitow, Xiao Wang, Benjamin P. Pritchard, Prakash Verma, Henry F. Schaefer III , Konrad Patkowski, Rollin A. King, Edward F. Valeev, Francesco A. Evangelista, Justin M. Turney, T. Daniel Crawford and C. David Sherrill. Psi4 1.1: An Open-Source Electronic Structure Program Emphasizing Automation, Advanced Libraries, and Interoperability. Journal of Chemical Theory and Computation. 2017.
We are happy to include future contributors as authors on later OpenFermion releases.
Copyright 2017 The OpenFermion Developers. This is not an official Google product.
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