Three-photon entanglement transfer and control in multi-emitter chiral waveguide quantum electrodynamics

We study the three-photon entanglement transfer and manipulation in chiral waveguides side coupled to a chain of two-level quantum emitters (QEs). By applying the machinery of Fock-state master equations, we pay special attention to how entanglement is transiently distributed among the QEs. Therein, we compare how chirality aids to maintain higher values of entanglement among QEs for longer times as compared to the case of bi-directional waveguide quantum electrodynamics. We envisaged quantum networking and long-distance quantum communication as the two main areas of applications of this work in quantum information science.