Comment by JanisErdmanis

> you can build most of the control and readout circuits to work at cryogenic temps (2-4K) using slvtfets

Given the magic that happens inside high-precision control and readout boxes connected to qubits with coaxial cables, I would not equate the possibility of building one with such a control circuit ever reaching the same level of precision. I find it strange that I haven’t seen that on the agenda for QC, where instead I see that multiplexing is being used.

> The theoretical limit for this quantum computing platform is, I believe, on the order of a million qubits in a single cryostat.

What are the constraints here?