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arXiv · 1508.07832

Finite-frequency noise in a topological superconducting wire

Stefano Valentini·Michele Governale·Rosario Fazio·Fabio Taddei
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Abstract

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.

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Stefano Valentini, Michele Governale, Rosario Fazio, Fabio Taddei. 2015-08-31. Finite-frequency noise in a topological superconducting wire. https://doi.org/10.1016/j.physe.2015.08.028

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