In this paper we study the finite-frequency current cross-correlations for a topological superconducting nanowire attached to two terminals at one of its ends. Using an analytic 1D model we show that the presence of a Majorana bound state yields vanishing cross-correlations for frequencies larger than twice the applied transport voltage, in contrast to what is found for a zero-energy ordinary Andreev bound state. Zero cross-correlations at high frequency have been confirmed using a more realistic tight-binding model for finite-width topological superconducting nanowires. Finite-temperature effects have also been investigated.
|Titolo:||Finite-frequency noise in a topological superconducting wire|
|Data di pubblicazione:||2016|
|Parole Chiave:||Quantum electron transport; Hybrid superconducting systems; Topological superconductors; Current-current correlations|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1016/j.physe.2015.08.028|
|Appare nelle tipologie:||1.1 Articolo in rivista|