  We propose a novel one-way quantum repeater architecture based on photonic
tree-cluster states. Encoding a qubit in a photonic tree-cluster protects the
information from transmission loss and enables long-range quantum communication
through a chain of repeater stations. As opposed to conventional approaches
that are limited by the two-way communication time, the overall transmission
rate of the current quantum repeater protocol is determined by the local
processing time enabling very high communication rates. We further show that
such a repeater can be constructed with as little as two stationary qubits and
one quantum emitter per repeater station, which significantly increases the
experimental feasibility. We discuss potential implementations with diamond
defect centers and semiconductor quantum dots efficiently coupled to photonic
nanostructures and outline how such systems may be integrated into repeater
stations.
