Abstract
Entanglement is a genuine quantum physical phenomenon that is expected to fully unfold in systems composed of multiple qubits. However, creating customised multi-qubit entanglement on demand and exploring its application potential is a formidable challenge. Using individual atoms in an optical cavity as a source of single photons, we have synthesised a plethora of almost arbitrary entanglement topologies described by graphs. These open the door to a multitude of novel applications such as quantum error correction in photonic quantum computation and quantum communication with tolerance against omnipresent photon loss.
