Speaker: Enrico di Benedetto
Affiliation: Università degli Studi di Palermo
Date: Wednesday, 22 April 2026 at 12:00
Location: Seminar Room, Serrano 113b
In this talk, I would like to present our results on the interactions of quantum emitters coupled to the boundary of a two-dimensional photonic graphene. While 2D topological lattices typically support propagating edge modes, a zigzag termination in this system hosts a unique set of dispersionless, non-propagating edge modes that form a partial flat band. We show that these light-matter interactions can be effectively described by a dissipative cavity-QED model in which the emitter coherently couples to a localized mode emerging as a superposition of these edge modes. This mode displays an unconventional power-law localization around the qubit yet remains normalizable, with a spatial range that can be precisely tuned by introducing lattice anisotropy. Based on this model, we predict the occurrence of vacuum Rabi oscillations and quantum state transfer between distant emitters along the lattice edge. Finally, we propose a feasible experimental demonstration using superconducting circuit-QED platforms, demonstrating that the predicted phenomena are observable within the coherence times of state-of-the-art transmon qubits
Reference: E. Di Benedetto et al, arXiv:2507.13444 [quant-ph] (2025)