Christopher J. Wood

I think this tutorial needs a bit more work and should be renamed to something like *HPC Cluster Simulation* @nonhermitian This tutorial should be for advanced HPC usage and describes...

We debated adding this when adding this instruction but ultimately decided against it since as say in 5 it doesn't really make sense for the amplitudes instruction unless you mask/condition...

Here are some references: https://arxiv.org/abs/1901.00535 https://arxiv.org/abs/1701.04299 https://arxiv.org/abs/1404.6025 https://arxiv.org/abs/1109.6887

I think what we want is *expectation value estimation* of a general operator. This isn't really tomography since we aren't reconstructing a quantum object -- we are estimating a classical...

@dcmckayibm for your original point of computing a list of Pauli expectation values you could currently do it as follows (without optimizations for commuting pauli operators to reduce number of...

@rjurga Qiskit Aer is a circuit based simulator and is designed for Markovian circuit based noise models which can always be represented as an ideal operation followed and CPTP maps....

"counts" is reserved for measurement counts. If you try and use it for something else you will end up passing some other raw data structure to initialize the qiskit `Counts`...

@georgesbarron Do you have any ideas for this?

These are equivalent, it's just a difference in convention. The convention for Aer's combined phase and amplitude damping was taken from Joseph Emerson's lecture notes on Open Quantum Systems and...

This needs a bunch of unit tests, but other than that looks fine. @t-imamichi agreed, though as long as we are happy with the function signature here we should add...