Autonomous entanglement distribution in correlated photonic and phononic reservoirs

In this talk, I will discuss the autonomous distribution of entanglement in quantum networks of qubits driven by the output of a correlated photon source. First, I will review some of our previous work on generating tunable multi-qubit entangled states in a dual-rail waveguide QED system by simply driving the atoms with a two-mode squeezed photon source. I will then address the more general question of how to quantify the usefulness of a given two-port photon source for entanglement distribution. As a concrete example, I will focus on photons emitted from a single, strongly driven two-level emitter and discuss under which conditions this minimal setting can serve as an efficient entanglement resource. This approach can be particularly useful for, e.g., phononic quantum networks, where solid-state defects are strongly coupled to propagating phonon modes, but where parametric processes commonly used in optical and circuit QED systems are not available.