  Quantum networking, heralded as the next frontier in communication networks,
envisions a realm where quantum computers and devices collaborate to unlock
capabilities beyond what is possible with the Internet. A critical component
for realizing a long-distance quantum network, and ultimately, the Quantum
Internet, is the quantum repeater. As with the race to build a scalable quantum
computer with different technologies, various schemes exist for building
quantum repeaters. This article offers a gentle introduction to the two-way
``all-photonic quantum repeaters,'' a recent addition to quantum repeater
technologies. In contrast to conventional approaches, these repeaters eliminate
the need for quantum memories, offering the dual benefits of higher repetition
rates and intrinsic tolerance to both quantum operational errors and photon
losses. Using visualization and simple rules for manipulating graph states, we
describe how all-photonic quantum repeaters work. We discuss the problem of the
increased volume of classical communication required by this scheme, which
places a huge processing requirement on the end nodes. We address this problem
by presenting a solution that decreases the amount of classical communication
by three orders of magnitude. We conclude by highlighting other key open
challenges in translating the theoretical all-photonic framework into
real-world implementation, providing insights into the practical considerations
and future research directions of all-photonic quantum repeater technology.
