The last line: "This procedure is to be implemented on the emergent quantum computers with the on-demand thermalizable qubits." As someone with more familiarit

The last line: "This procedure is to be implemented on the emergent quantum computers with the on-demand thermalizable qubits." As someone with more familiarity with quantum computer science than its implementation via "computers," I ask: is it feasible to instantaneously swap states as described on any near-term quantum computers? Of course, ignoring the issue of needing sufficiently many ancilla to render the reversal accurate. It certainly appears to be a novel theoretical result, but I question its practicality. The title was kind of click-bait lol