Coulomb interaction unlocks Majorana-mediated electron teleportation between quantum dots

We investigate quantum transport through a hybrid system consisting of two quantum dots (QDs) coupled via a pair of spatially separated Majorana zero modes (MZMs) with negligible coupling energy. The transport properties, especially the nonlocal correlation mediated by the MZMs, are studied with a focus on the role of the Coulomb interaction U between the QDs and the Majorana wire. Using the numerically exact fermionic dissipation equation of motion method, we calculate both the transient current and the current-current cross correlation noise spectrum. Our results demonstrate that in the non-interacting case (U = 0), destructive interference between the normal tunneling and anomalous tunneling channels suppresses electron teleportation between the dots. Introducing a finite Coulomb interaction U lifts this channel degeneracy, thereby establishing strong nonlocal correlations and enabling inter-dot electron teleportation. This effect manifests as a robust signal in the cross correlation noise spectrum, which is significantly stronger than that induced by a finite Majorana coupling energy ɛM. Our work proposes Coulomb interaction as an efficient and experimentally accessible control parameter for generating and detecting Majorana-mediated nonlocal transport in the topologically relevant long-wire limit (ɛM → 0).