Example
using Quac
circ = vcat(Quac.Algorithms.QFT(4), Quac.Algorithms.QFT(4))
draw(circ)
Result
This is wrong: top 4 qubits and bottom 4 qubits are independent and their quantum gates should locate in parallel, starting at the same point. However, they concat in the temporal dimension.
![plot_8](https://user-images.githubusercontent.com/15837247/205361532-e9e62c64-a233-46ab-9c9f-be94923b3fd1.svg)