  The importance of being able to verify quantum computation delegated to
remote servers increases with recent development of quantum technologies. In
some of the proposed protocols for this task, a client delegates her quantum
computation to non-communicating servers in multiple rounds of communication.
In this work, we propose the first protocol where the client delegates her
quantum computation to two servers in one-round of communication. Another
advantage of our protocol is that it is conceptually simpler than previous
protocols. The parameters of our protocol also make it possible to prove
security even if the servers are allowed to communicate but respecting the
plausible assumption that information cannot be propagated faster than speed of
light, making it the first relativistic protocol for quantum computation.
