Releases | Open Source Science

openfermion - v1.7.1

OpenFermion version 1.7.1 has been released. The main change in this release is compatibility with NumPy 2. In addition to this, the release contains some minor bug fixes, dependency library updates, and overall repository upkeep. It's available from GitHub (https://github.com/quantumlib/OpenFermion) and PyPI (https://pypi.org/project/openfermion).

What's Changed

Add checks for GitHub Actions workflows, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/969
Add CodeQL workflow, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/970
Add Scorecard workflow, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/971
Only run Scorecard 1/day, not on every push, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/972
Remove extra comma at end of .zenodo.json file, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/974
Add JSON lint check to ci.yml, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/975
Add Dockerfile linting to CI checks, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/981
Make Dependabot not look at requirements/env, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/982
Add .editorconfig file, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/990
Add shellcheck for shell script linting, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/991
Add OSV code scanner and make minor adjustments to CI, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/992
Edit CONTRIBUTING.md, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/993
Add markdownlint config file, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/995
Fix warnings reported by shellcheck, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/997
CI checks need to be run if ci.yml changes, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/998
Add problem matchers for Mypy, Pytest, and Black, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/1000
Update README badge for CI workflow status, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/1001
Fix values of changed files variables, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/1002
Update tutorial-requirements.txt to match regular deps, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/1003
Run OSV scan on PRs if requirements files are changed, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/1004
Ignore false positives from osv-scanner, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/1005
Tiny edits to README, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/1009
Add more comments & reformat slightly, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/1011
Add comments, fix URLs, and reformat CITATION.cff, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/1012
Fix typo in first paragraph, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/1013
Revise nightly test & scan workflows, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/1015
Add missing license headers, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/1016
Fix a broken sentence, a misspelling, and update some text, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/1017
Don't use --include-git-root option with osv-scanner, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/1018
Update dot files, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/1019
Silence asynciodefaultfixtureloopscope warnings, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/1025
Add small icon image for use in Google Groups, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/1030
Add workflow to trim Dependabot PR message bodies, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/1031
Need to pass GH_TOKEN to "gh" command, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/1032
Specify repo directly so checkout is not needed, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/1033
Dependabot trimmer only needs to run on merge queues, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/1034
Trigger on automergeenabled, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/1037
Remove original dependabot-pr-trimmer.yaml, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/1043
Fix broken math and other constructs in API documentation, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/1044
Remove .zenodo.json file, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/1047
Partly fix #1008 and #1024: update dependencies and environment files for NumPy 2, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/1055
Set a fixed random seed during testing, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/1056
Partly fix #1008 and #1024: adjust files to support NumPy 2, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/1057
Fix #926: remove self-assignment, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/1058
Fix #924: remove self-assignments, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/1059
Add issue templates using GitHub forms, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/1061
Fix #1062: ignore warning from a Cirq function about Qiskit, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/1063
Ignore expected warnings during testing, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/1065
Fix #1064: replace calls to deprecated method orbital_energies, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/1066
Add missing copyright headers, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/1067
Remove CI badge, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/1069
Fix Python 3.12 deprecation warning about os.fork(), by @mhucka in https://github.com/quantumlib/OpenFermion/pull/1070
Fix warning about asyncio.geteventloop() in Python 3.12, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/1071
Avoid division by zero in adagrad, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/1072
Version bump to 1.7.1, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/1073
Fix a number of CodeQL code-scanning alerts, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/1074
Update labels used by Dependabot, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/1075

Full Changelog: https://github.com/quantumlib/OpenFermion/compare/v1.7.0...v1.7.1

- Python
Published by mhucka 12 months ago

openfermion - v1.7.0

OpenFermion version 1.7.0 has been released. This new version contains new features, bug fixes, many dependency library updates, and overall repository upkeep. It's available from GitHub (https://github.com/quantumlib/OpenFermion) and PyPI (https://pypi.org/project/openfermion).

Compatibility notice

This release specifies updated versions of most Python packages and tools that OpenFermion depends upon, such as Cirq, and also raises the minimum version of Python needed to 3.10. These updates allow OpenFermion to keep pace with advancements in the Python ecosystem as well as get the latest bug fixes and improvements in its package dependencies.

If you encounter significant version conflicts with your environment or other Python packages that you need to use in conjunction with OpenFermion, please open an issue on GitHub and let us know.

What's Changed

New feature additions

Make JAX config updates and expose penalty_param by @cvsik in https://github.com/quantumlib/OpenFermion/pull/894
Add MajoranaOperator supports operation with numbers, by @snow0369 in https://github.com/quantumlib/OpenFermion/pull/868
Include .h5 data files in resource_estimates/integrals as part of the installation, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/968

Other changes

Fix doc generation, by @dstrain115 in https://github.com/quantumlib/OpenFermion/pull/869
Remove cirq_google, by @dstrain115 in https://github.com/quantumlib/OpenFermion/pull/871
Fix comparison in freeze_orbitals, by @aleksey-uvarov in https://github.com/quantumlib/OpenFermion/pull/898
Minor typo in projects.md, by @vtomole in https://github.com/quantumlib/OpenFermion/pull/902
Update the link to Nielsen's notes., by @vtomole in https://github.com/quantumlib/OpenFermion/pull/903
Update CI worfklow actions & fix minor bug, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/909
Add security policy statement, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/913
Enhance CI workflows, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/914
Fix nightly CI workflow failures, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/915
Add Code of Conduct and SUPPORT.md files, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/916
Modularize workflow & find working os/arch/python combos, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/917
Use local reference to workflow path, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/919
Add .zenodo.json file, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/921
Split Pytest jobs into separate matrix & results steps, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/922
Update setup.py info & add classifiers, keywords, maintainers, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/920
Update versions of dependencies & regenerate envs/*.txt files, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/923
Fix misc minor issues, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/933
Minor enhancements to README file & fix to setup.py, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/934
Replace no-longer-available SciPy constructs, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/935
Correct Nick Rubin's affiliation, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/937
Raise SciPy version to 1.15 and update requirements accordingly, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/936
Add testing on Python 3.13 to nightly tests, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/938
Update version of Python used in CI max compat tests, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/940
Add CONTRIBUTING.md file, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/941
Update & enhance packaging scripts, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/943
Remove doc source files from installation, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/945
Add timeouts to jobs, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/946
Improve efficiency by testing if any files changed, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/948
Add YAML file linter, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/951
Add GHA problem-matcher for pylint, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/957
Pin action versions to commit hashes, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/959
Use specific versions of GitHub runners, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/960
Add CITATION.cff file, by @mhucka in https://github.com/quantumlib/OpenFermion/pull/966

New Contributors

@snow0369 made their first contribution in https://github.com/quantumlib/OpenFermion/pull/868
@cvsik made their first contribution in https://github.com/quantumlib/OpenFermion/pull/894
@aleksey-uvarov made their first contribution in https://github.com/quantumlib/OpenFermion/pull/898
@mhucka made their first contribution in https://github.com/quantumlib/OpenFermion/pull/909

Full Changelog: https://github.com/quantumlib/OpenFermion/compare/v1.6.1...v1.7.0

- Python
Published by mhucka over 1 year ago

openfermion - v1.6.1

What's Changed

Bump requirements by @mpharrigan in https://github.com/quantumlib/OpenFermion/pull/854
Reformat src/openfermion using black formatter. by @fdmalone in https://github.com/quantumlib/OpenFermion/pull/846
Fix pytest deprecation warnings. by @fdmalone in https://github.com/quantumlib/OpenFermion/pull/852
Fix scipy sqrtm precision issue by @fdmalone in https://github.com/quantumlib/OpenFermion/pull/864
Remove limit on cirq by @fdmalone in https://github.com/quantumlib/OpenFermion/pull/867

Full Changelog: https://github.com/quantumlib/OpenFermion/compare/v1.6.0...v1.6.1

- Python
Published by fdmalone over 2 years ago

openfermion - v1.6.0

What's Changed

Fix two openfermion docs by @dstrain115 in https://github.com/quantumlib/OpenFermion/pull/795
Update DropNegligible to cirq.dropnegligibleoperations by @dstrain115 in https://github.com/quantumlib/OpenFermion/pull/799
Matrix exponential of sparse matrix is not allowed by @dstrain115 in https://github.com/quantumlib/OpenFermion/pull/800
Fix another expm doc error by @dstrain115 in https://github.com/quantumlib/OpenFermion/pull/801
Change a few more sparse matrices to dense to get docs working by @dstrain115 in https://github.com/quantumlib/OpenFermion/pull/802
Revert dense matrix by @dstrain115 in https://github.com/quantumlib/OpenFermion/pull/804
Fix CI. by @fdmalone in https://github.com/quantumlib/OpenFermion/pull/816
Rename openfermion/third_party/ to openfermion/contrib/ by @tanujkhattar in https://github.com/quantumlib/OpenFermion/pull/806
Fixed deprecated import of OptimizeResult by @ica574 in https://github.com/quantumlib/OpenFermion/pull/811
Apply suggestions from CommonTypos checker by @pavoljuhas in https://github.com/quantumlib/OpenFermion/pull/817
Use pip-compile for CI dependencies by @mpharrigan in https://github.com/quantumlib/OpenFermion/pull/818
Enable testing for resource estimates by @fdmalone in https://github.com/quantumlib/OpenFermion/pull/828
Improve runtime type checking in symmetryconservingbravyi_kitaev by @kwkbtr in https://github.com/quantumlib/OpenFermion/pull/785
[PBC Resources Estimates 1/4] Add k-point THC factorization by @fdmalone in https://github.com/quantumlib/OpenFermion/pull/821
freeze_orbitals reflects the prune flag by @mafaldaramoa in https://github.com/quantumlib/OpenFermion/pull/803
[PBC Resources Estimates 2/4] Add Integral Factorization Helpers by @fdmalone in https://github.com/quantumlib/OpenFermion/pull/822
[PBC Resources Estimates 3/4] Add computation of lambda by @fdmalone in https://github.com/quantumlib/OpenFermion/pull/823
[PBC Resources Estimates 4/4] Add costing functions by @fdmalone in https://github.com/quantumlib/OpenFermion/pull/824
Switch to using the black formatter by @mpharrigan in https://github.com/quantumlib/OpenFermion/pull/835
Use docker to pin dependencies by @mpharrigan in https://github.com/quantumlib/OpenFermion/pull/829
Add black pyproject by @fdmalone in https://github.com/quantumlib/OpenFermion/pull/847
Add resource estimates requirements as extras_require. by @fdmalone in https://github.com/quantumlib/OpenFermion/pull/841
Bump version for release. by @fdmalone in https://github.com/quantumlib/OpenFermion/pull/848
Fix setup resource path by @fdmalone in https://github.com/quantumlib/OpenFermion/pull/849

New Contributors

@fdmalone made their first contribution in https://github.com/quantumlib/OpenFermion/pull/816
@ica574 made their first contribution in https://github.com/quantumlib/OpenFermion/pull/811
@pavoljuhas made their first contribution in https://github.com/quantumlib/OpenFermion/pull/817
@kwkbtr made their first contribution in https://github.com/quantumlib/OpenFermion/pull/785
@mafaldaramoa made their first contribution in https://github.com/quantumlib/OpenFermion/pull/803

Full Changelog: https://github.com/quantumlib/OpenFermion/compare/v1.5.1...v1.6.0

- Python
Published by fdmalone over 2 years ago

openfermion - v1.5.1

What's Changed

Resolves failing cirq pre-release by @ncrubin in https://github.com/quantumlib/OpenFermion/pull/794

Full Changelog: https://github.com/quantumlib/OpenFermion/compare/v1.5.0...v1.5.1

Mainly fixes a issue with using linalg.expm instead of scipy.sparse.linalg.expm such that the right data types are being passed around.

- Python
Published by ncrubin almost 4 years ago

openfermion - v1.5.0

What's Changed

Fix reference to deprecated SingleQubitGate by @dstrain115 in https://github.com/quantumlib/OpenFermion/pull/788
Making OF compatible with cirq>0.15 by @ncrubin in https://github.com/quantumlib/OpenFermion/pull/793

Full Changelog: https://github.com/quantumlib/OpenFermion/compare/v1.4.0...v1.5.0

- Python
Published by ncrubin almost 4 years ago

openfermion - v1.4.0

What's Changed

Reset version to "dev" by @mpharrigan in https://github.com/quantumlib/OpenFermion/pull/759
fault-tolerant resource estimates for chemical hamiltonians by @jjgoings in https://github.com/quantumlib/OpenFermion/pull/763
Fix QuadraticHamiltonian diagonalization by @kevinsung in https://github.com/quantumlib/OpenFermion/pull/772
Reduced BCS type Hamiltonians by @cvmxn1 in https://github.com/quantumlib/OpenFermion/pull/770
Fix cirq coverage test by @dstrain115 in https://github.com/quantumlib/OpenFermion/pull/779
Fix cirq.google reference in docs. by @dstrain115 in https://github.com/quantumlib/OpenFermion/pull/778
Move tutorial from cirq by @augustehirth in https://github.com/quantumlib/OpenFermion/pull/783
DropNegligible was used but is deprecated. by @WhiteSymmetry in https://github.com/quantumlib/OpenFermion/pull/781
Adds a link to the Q-Chem plugin in README by @epifanovsky in https://github.com/quantumlib/OpenFermion/pull/784
Lookup dictionary for JW transformation of a FermionOperator by @alexfleury in https://github.com/quantumlib/OpenFermion/pull/777
Pin Requirements to working cirq versions by @ncrubin in https://github.com/quantumlib/OpenFermion/pull/786

New Contributors

@jjgoings made their first contribution in https://github.com/quantumlib/OpenFermion/pull/763
@cvmxn1 made their first contribution in https://github.com/quantumlib/OpenFermion/pull/770
@dstrain115 made their first contribution in https://github.com/quantumlib/OpenFermion/pull/779
@augustehirth made their first contribution in https://github.com/quantumlib/OpenFermion/pull/783
@WhiteSymmetry made their first contribution in https://github.com/quantumlib/OpenFermion/pull/781
@epifanovsky made their first contribution in https://github.com/quantumlib/OpenFermion/pull/784
@alexfleury made their first contribution in https://github.com/quantumlib/OpenFermion/pull/777

Full Changelog: https://github.com/quantumlib/OpenFermion/compare/v1.3.0...v1.4.0

- Python
Published by ncrubin almost 4 years ago

openfermion - v1.3.0

OpenFermion 1.3 is an incremental update with some fixes and improvements (see below). Crucially, we have moved from pinning to a specific version of Cirq to having a minimum supported version of Cirq (0.12 for this release).

Changes

Implement Bravyi-Kitaev for InteractionOperator (#753)
Fix unexpected behavior of symmetryconservingbravyi_kitaev (#734)
Revamp CI: matrix, multi-Cirq (#755)

- Python
Published by mpharrigan over 4 years ago

openfermion - v1.2.0

Upgrade cirq compatibility.

What's Changed

[Docs] Format math expressions by @rmlarose in https://github.com/quantumlib/OpenFermion/pull/738
Adding mention of OpenFermion-FQE to the frontpage by @babbush in https://github.com/quantumlib/OpenFermion/pull/740
Added functionality to compute one-norm of qubit/majorana Hamiltonian from molecular integrals by @Emieeel in https://github.com/quantumlib/OpenFermion/pull/725
Updates linux CI to use 18.04 by @MichaelBroughton in https://github.com/quantumlib/OpenFermion/pull/747
Updates fqe include path for site rendering by @MichaelBroughton in https://github.com/quantumlib/OpenFermion/pull/746
Upgrade to cirq 0.12 by @tanujkhattar in https://github.com/quantumlib/OpenFermion/pull/748
Version bump by @ncrubin in https://github.com/quantumlib/OpenFermion/pull/749

New Contributors

@tanujkhattar made their first contribution in https://github.com/quantumlib/OpenFermion/pull/748

Full Changelog: https://github.com/quantumlib/OpenFermion/compare/v1.1.0...v1.2.0

- Python
Published by ncrubin over 4 years ago

openfermion - v1.1.0

levels up to cirq 0.11

- Python
Published by ncrubin almost 5 years ago

openfermion - v1.0.1

Creating official release from March 6th v1.0.1 release of OpenFermion associated with commit ( c22551fbb8f7965c0d3fd0fc119ff2f8b569917a).

- Python
Published by ncrubin almost 5 years ago

openfermion - OpenFermion v1.0

This release is for the stable 1.0 version of OpenFermion. Significant changes from the 0.11 release have been made. The most notable changes are listed below.

Features:

MajoranaOperator <-> FermionOperator with Jordan-Wigner + Bravyi-Kitaev options, getmajorana acts like getfermion operator. Is_contextual for confirming if a Hamiltonian is contextual SymbolicOperator coefficients are sympy.Expr objects Partitioning schemes for measuring fermionic 1- and 2-RDMs Functionality for the Hartree-Fock project Spatial -> spin-orbital integrals Extended RPA Constructing a pure 2-body (reduced Hamiltonian) from 1-body and 2-body InteractionOperator. Construct antisymmeterized 2-electron integrals + coulomb + exchange matrices Verified phase estimation utilities

Organization:

Merging of OpenFermion-Cirq into OpenFermion Reorganize package (#620) (new submodules: chem, linalg, circuits, functionals, transforms) Sample data is integrated with package for testing. Reorganize utils Deprecation of Readthedocs as the documentation host. Docs are now generator by tensorflow-docs and hosted at https://quantumai.google/openfermion

- Python
Published by ncrubin over 5 years ago

openfermion - OpenFermion v0.11.0

Starting with this version, Python 2 is no longer supported. Other notable changes and additions: - Functions to partition qubits into subsets for efficient measurement of Pauli strings: openfermion.binary_partition_iterator, openfermion.partition_iterator, openfermion.pauli_string_iterator. - Added structure argument to openfermion.geometry_from_pubchem. It is recommended to set this to '3d' to ensure correct structures are returned (see https://github.com/quantumlib/OpenFermion/pull/544). - openfermion.get_number_preserving_sparse_operator. - openfermion.prony.

- Python
Published by kevinsung about 6 years ago

openfermion - OpenFermion v0.10.0

Notable changes and additions: - Adds a new class, MajoranaOperator, to represent operators in the Majorana basis. Support for this operator added to openfermion.jordan_wigner and openfermion.bravyi_kitaev. - Speeds up construction of jellium Hamiltonians by utilizing translation invariance - openfermion.wedge - Adds some utility methods to InteractionOperator - Utilities for tapering off qubits using stabilizer conditions: openfermion.utils.taper_off_qubits, openfermion.utils.reduce_number_of_terms - Fixes a bug that caused incompatibility with scipy 1.3.0

- Python
Published by kevinsung almost 7 years ago

openfermion - OpenFermion v0.9.0

Notable changes and additions: - The diagonalizing_bogoliubov_transform method of openfermion.QuadraticHamiltonian now returns a tuple of three objects: the orbital energies, the transformation matrix, and a constant energy offset - openfermion.FermiHubbardModel - openfermion.IsingOperator - openfermion.group_into_tensor_product_basis_sets - Improves low-rank decomposition to work in spatial orbital basis rather than spin-orbital basis - SymbolicOperator is now an abstract base class - Specialized routines to compute commutators of Diagonal coulomb operators faster - Updated Docker image to include OpenFermion-Cirq - Default absolute precision for floating point operations changed from 1e-12 to 1e-8

- Python
Published by kevinsung over 7 years ago

openfermion - OpenFermion v0.8

Eighth production release. Minor release necessitated by depending libraries. * Most importantly, new logo. * Functionality for performing low rank decompositions of two-body operators. * Small additions of helper functions for more flexible testing.

- Python
Published by babbush almost 8 years ago

openfermion - OpenFermion v0.7

Seventh production release. Many new features introduced including:

Method to obtain circuit that diagonalizes a QuadraticHamiltonian.
Generalized equality and arithmetic operations for PolynomialTensor.
Fixed minor bug in is_hermitian function.
New DiagonalHamiltonian class for interacting fermion systems with diagonal two-body term.
Human-readable IO for SymbolicOperator.
Functions to map particle RDMs to hole RDMs and vice versa.
Fixed bug in plane wave / dual Hamiltonian generation which occurred for even grids.
Code to preprocess coefficients for LCU algorithm introduced in arXiv:1805.03662.
LinearOperator class for efficient numerical diagonalization of QubitOperators.
Routines to use Davidson routine for obtaining ground states using LinearOperator.
Functions to automatically obtain MolecularData geometries from PubChem database.
New BosonOperator class.
Generation of Bose-Hubbard Hamiltonians.
Functions to automatically remove redundant qubits post-BK transformation.
Added functionality to generate plane wave / dual basis Hamiltonians with reduced periodicity.
Links to Xanadu Strawberry Fields "OpenBoson" library.

- Python
Published by babbush almost 8 years ago

openfermion - OpenFermion v0.6

Unfortunately a change between v0.4 and v0.5 introduced a circular dependency in the setup script that caused an install problem with the v0.5 release for some environments. The v0.6 release corrects that issue and also reconfigures our continuous integration testing so that problems like this will be more easily detected in the future.

- Python
Published by babbush about 8 years ago

openfermion - OpenFermion v0.5

Fifth production release, necessary due to some reorganization of modules as well as:

Fixed bug in the Jordan-Wigner transform applied to InteractionOperators.
Fixed bug in the Bravyi-Kitaev Superfast Transform which caused some terms to be ignored.
Fixed bug in binary code transforms causing creation operators to map to annihilation operators.
Changed implementation of the Bravyi-Kitaev transform to use from arXiv:quant-ph/0003137.
We now implement BK transform from arXiv:1701.07072 under a different name.
Renamed SymbolicBinary as BinaryPolynomial.
Changed the convention used in the function for instantiating Majorana fermion operators.
Introduced new syntax for instantiating FermionOperators and QubitOperators with a single factor.
Added the fermionic spin operators Sx and Sy to the special operators module.
Added a demo of the Jordan-Wigner and Bravyi-Kitaev transforms.

- Python
Published by babbush about 8 years ago

openfermion - OpenFermion v0.4

Fourth production release. This is a major update introducing many new features: * Added (alpha version) of a "cloud library" for sharing / storing molecular data files. * Added routines for generating special FermionOperators such as Sz, S^2, S^+, etc. * Added SymbolicOperator as parent class from which FermionOperator/QubitOperator inherit. * Added flexible method of initializing classes derived from SymbolicOperators from strings. * Fixed some numerical instabilities in sparse operator routines. * Fixed some minor bugs with the saving and loading of FermionOperator/QubitOperator. * Added some preliminary routines for generating quantum phase estimation circuits. * Added substantial infrastructure for generalized fermion transforms based on arXiv:1712.07067. * Added non-linear encoders for transforming fermions with reduced spatial complexity. * Changed conventions for how fermion modes are ordered in terms of the spin index. * Added routines to transform functions for reordering fermion modes prior to transform. * New demos for Given routine procedures and generalized fermion encodings.

- Python
Published by babbush about 8 years ago

openfermion - OpenFermion v0.3

Third production release. Fixes a crucial bug related to rotating molecular orbitals. Also: * Adds code for Verstraete-Cirac transform. * Allows users to write "from OpenFermion import *". * Fixes minor bugs in code to generate spinless Hubbard models. * Adds functionality for computing Trotter errors.