OpenFermion

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Visualization modules

2

There are tools such as VMD and Avogadro which are designed to visualize molecular orbitals and charge densities. Thus, one should be able to use these tools to visualize the...

babbush

Higher dimensional Jordan-Wigner transform

1

Explained in [this 2005 paper](https://arxiv.org/abs/cond-mat/0508353) by Verstraete and Cirac, it is possible to transform local fermion Hamiltonians on a lattice in D dimensions into local spin Hamiltonians on a lattice...

babbush

As we expand the molecule library that is available in the cloud, we should develop an automated test for pulling those files down and running some basic sanity checks. For...

jarrodmcc

In general, we rotate a matrix M to M' is to apply a rotation matrix R: M' = R @ M @ R.T The corresponding Einstein notation is M'^{p_1p_2} =...

aoowweenn

Make the call to prune_unused_indices in freeze_orbitals conditional on the 'prune' kwarg (issue #660)

mafaldaramoa

I am trying to convert Jordan-Wigner mapping to Bravyi-Kitaev mapping for an existing QASM file. I found [this stackexchange thread](https://quantumcomputing.stackexchange.com/a/12427/21223) to be relevant, but I am not sure whether it...

buttercutter

In files [hartree_fock_test.py](https://github.com/quantumlib/OpenFermion/blob/7c3581ad75716d1ff6a0043a516d271052a90e35/src/openfermion/hamiltonians/hartree_fock_test.py) and [hartree_fock.py](https://github.com/quantumlib/OpenFermion/blob/7c3581ad75716d1ff6a0043a516d271052a90e35/src/openfermion/hamiltonians/hartree_fock.py) the import pattern of ```python from scipy.optimize.optimize import OptimizeResult ``` yields the following deprecation warning: ``` DeprecationWarning: Please use `OptimizeResult` from the `scipy.optimize` namespace, the...

vprusso

Hubbard model notebook is flaky

3

From #869 we see some regression with FQE in the sense that the Taylor series might not converge. It's not clear when this broke or if it's a flaky numerical...

fdmalone

Nightly tests are broken

1

Should fix this and use it as an opportunity to test the slow tests.

fdmalone

slight modification to function generate_hamiltonian ?

1

Hi, when playing with some active space Hamiltonians with pyscf and generating them as FermionOperator objects (or rather InteractionOperator objects), I found that the resulting Hamiltonian included a lot of...

michaelkaicher