entanglement-forging v0.2.0 is released to PyPI

[caleb-johnson]

entanglement-forging v0.2.0 is released to PyPI.

To get the latest entanglement forging package, install from pip:
pip install --upgrade entanglement-forging

---

Note that your version of qiskit-nature may have been upgraded when installing the new entanglement forging release. Some common packages have been removed from qiskit-nature in recent releases, and your old scripts may not run after upgrading. A couple of changes that many will have to make:

from qiskit_nature.drivers import PySCFDriver
should become
from qiskit_nature.drivers.second_quantization import PySCFDriver

driver = PySCFDriver(molecule=..., basis=...)
should become
driver = PySCFDriver.from_molecule(molecule=..., basis=...)

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Once you have verified your old scripts run with the new forging release, you can check out the latest feature -- the ability to specify different bitstring lists for each of the subsystems, U and V.

Now, anywhere "bitstrings" used to be specified, "bitstrings_u" should be specified, and "bitstrings_v" may optionally be specified. For example, the EFGroundStateSolver can now be instantiated like this:

...
bitstrings_u = [[0, 1, 1, 0], [1, 1, 0, 0], [0, 1, 0, 1]]
bitstrings_v = [[1, 0, 0, 1], [0, 1, 0, 1], [1, 1, 0, 0]]

ef_solver = EntanglementForgedGroundStateSolver(
    qubit_converter=converter,
    ansatz=ansatz,
    bitstrings_u=bitstrings_u,
    bitstrings_v=bitstrings_v,
    config=config,
    orbitals_to_reduce=orbitals_to_reduce,
)

Please let us know if you have any issues or questions!