quantum-algorithms

Description of the issue
Similar to cirq.SQRT_ISWAP_INV, define a global constant for cirq.ISWAP_INV and replace usages of cirq.ISWAP ** -1 with cirq.ISWAP_INV.

https://github.com/quantumlib/Cirq/blob/7951f84a0110be719c8a9e07aa1ffec2b0a31990/cirq-core/cirq/ops/swap_gates.py#L356

Cirq version
0.14.0

To get this codebase up to standard, we need to add type hints. At the very least, perhaps we should start insisting that all new code has type hints added, but moreover we need to add typing to the code that currently exists.

This is a pretty large project, but luckily it can be done incrementally - I believe at this point it's a stretch goal for v1, if anyone wants to help it would be much ap

Whenever a slide has minted code, like so:

\begin{frame}[fragile]{Example minted}
	\begin{minted}{python}
		from qiskit_aqua import run_algorithm

		print(run_algorithm(params)['result'])
	\end{minted}
\end{frame}

One is unable to add the \pagenumber before \end{frame} as it gets left aligned instead of right aligned:
![image](https://user-images.githubusercontent.com/1

RDMs returned from pyscf are spin summed. Use https://sunqm.github.io/pyscf/_modules/pyscf/fci/direct_spin1.html#FCISolver.make_rdm12s

to return non-spin summed versions. Recombine spin-separated RDMs like run_psi4 to get spin-orbital rdms before returning to OpenFermion.

LGTM has flagged a few code quality issues. Fix em.

https://lgtm.com/projects/g/gecrooks/quantumflow-dev/context:python