  Optical switches and rerouting network are main obstacles to realize optical
quantum computer. In particular, both components have been considered as
essential components to the measurement-based time-domain optical quantum
computation, which has seen promising developments regarding scalability in the
recent years. Realizing optical switches and rerouting network with sufficient
performance is, however, experimentally challenging as they must have extremely
low loss, small switching time, high repetition rate, and minimum optical
nonlinearity. In this work, we present an optical quantum computation platform
that does not require such optical switches. Our method is based on
continuous-variable measurement-based quantum computation, where instead of the
typical cluster states, we modify the structure of the quantum entanglements,
so that quantum teleportation protocol can be employed instead of the optical
switching and rerouting. We also show that when combined with
Gottesman-Kitaev-Preskill encoding, our architecture can outperform the
architecture with optical switches when the optical losses of the switches are
not low.
