Some kind of transporter technology would be theoretically possible. Patterns degrade in buffers because the electronic signals from the brain must be preserved, breaking down over time. If such preservation is unnecessary, creating a body would be tantamount to using a replicator, although the ethics are disturbing.

Such things as body replication in order to store the psyches of other beings has also been recorded. [ Why are starships so dangerous. ] The correct term in that case is doppelgänger.

It may go some way to explaining the duplicates on board, and why our absences from our own timelines go unnoted. It may also explain why we do not return home unless we are in effect being rebooted here with additional data.

[ Do you hear what he's proposing, Topher? It's a mindfuck. Literally. ]