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drawqrtz
What use has a SDK for developing on an imaginary hardware. But seriously how do you even test it?
m-watson
There is hardware, it isn't imaginary. It just isn't very robust or extensive yet.
AlexCoventry
There is hardware which purportedly does a quantum computation, but it's completely useless even as a proof of concept, unless you have a burning need to randomly sample from the distribution it happens to generate.
R0b0t1
An interesting idea is simulating quantum math on real hardware. It's an open question if quantum computing is equivalent to contemporary computing. It seems likely that it is.
FartyMcFarter
> but it's completely useless even as a proof of concept

We might have different definitions of "proof of concept", but I think that's exactly what it was (if you're referring to Google's experiment).

This FAQ explains this quite nicely:

https://scottaaronson.blog/?p=4317

R0b0t1
It's a simulation suite as far as I can tell.
FartyMcFarter
> What use has a SDK for developing on an imaginary hardware.

Learning and research, to name two.

> But seriously how do you even test it?

Emulators.

kakistokrat
IBM has early stage hardware that can be used for toy-ish proof of concept work. because the hardware is still very noisy and not error corrected, it cannot be used for more than extremely simple problems. also, access to anything but the simplest hardware systems is hard to get and expensive. so people who want to do research on quantum computing mostly use simulators. qiskit does both simulation as well as provide actual hardware access to IBMs hardware.
[dead] HahaReally
Quantum computing is a grift, stop trying to pretend it’s not.