In pytket migration guide recommend allocating and deallocating qubits outside pytket

[ss2165]

https://docs.quantinuum.com/guppy/migration_guide.html

We already do that in the example but we don't say why it is best practice, can be done with a Note box. e.g.

Note

It is best to use pytket loading for pure unitary circuits where possible. Guppy's ownership doesn't map well to pytket Circuits where qubits are typically alive from start to finish and measurement is projective. It does map to Guppy borrowing well though - so try to allocate and deallocate (measure/discard) qubits in Guppy, and pass them into the loaded pytket function.

[CalMacCQ]

Thanks, I'll add this in.