Abstract
We theoretically predict the formation of two-photon bound states in a two-dimensional waveguide network hosting a lattice of two-level atoms. The properties of these bound pairs and the exclusive domains of the parameter space where they emerge due to the interplay between the on-site photon blockade and peculiar shape of polariton dispersion resulting from the long-range radiative couplings between the qubits are investigated in detail. In addition, we analyze the effect of the finite-size system on localization characteristics of these excitations.
| Original language | English |
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| Article number | 273602 |
| Journal | Physical Review Letters |
| Volume | 127 |
| Issue number | 27 |
| DOIs | |
| Publication status | Published - 31 Dec 2021 |