Paul Nation

The above example really makes no sense. I really need to know the number of qubits that I measured in order for the above to make any sense, e.g. If...

I would always store the number of bits. Having an user pass them is really unnecessary, and is just another possible failure point.

Ahh ok. That is not clear from the example above. If we allow for int keys then we do need to store numbers of bits somewhere for it to make...

It would be nice to get this merged so that I can work on addressing #8744 and then make a PR for the expectation value code that we need for...

This may help https://github.com/Qiskit/qiskit-terra/pull/3491

Note that I have been working on some stuff, e.g. here https://nonhermitian.github.io/kaleidoscope/tutorials/interactive/bloch_sphere.html Currently requires Qiskit, but for the interactive plots this is not true. I just haven't had time to...

Hbar is not needed, it is a constant that can be divided away. That is what QuTiP does. In the end your left with Hamiltonians expressed in units of angular...

Depending on where this is inserted in the textbook, I think a section on hardware implementation might be important here. That is to say that many of these gates become...

I am not sure if one really needs to run these against a noisy simulator, although that does provide some insight. The thing with `ccx` gates or `cccx` etc. is...

Does it give the results for a displacement operator in a truncated Hilbert space? If it just matches textbook results that are computed in an infinite dimensional space then we...