It's possible to structure "quantum communication" (meaning passing qubits back and forth, basically) so that if someone in the middle reads them at all, the re

It's possible to structure "quantum communication" (meaning passing qubits back and forth, basically) so that if someone in the middle reads them at all, the recipient is aware of it. It's not really possible to prevent the interception but it is possible always to detect it, at least in theory.