English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

A topological superconductor nanowire bears a Majorana bound state at each ofits ends, leading to unique transport properties. As a way to probe these, westudy the finite frequency noise of a biased junction between a normal metaland a topological superconductor nanowire. We use the non-equilibrium Keldyshformalism to compute the finite frequency emission and absorption noise to allorder in the tunneling amplitude, for bias voltages below and above thesuperconducting gap. We observe noticeable structures in the absorption andemission noise, which we can relate to simple transport processes. The presenceof the Majorana bound state is directly related to a characteristic behavior ofthe noise spectrum at low frequency. We further compute the noise measurablewith a realistic setup, based on the inductive coupling to a resonant LCcircuit, and discuss the impact of the detector temperature. We have alsocomputed the emission noise for a non-topological system with a resonant level,exhibiting a zero-energy Andreev bound state, in order to show thespecificities of the topological case. Our results offer an original tool forthe further characterization of the presence of Majorana bound states incondensed matter systems.

Finite frequency noise in a normal metal - topological superconductor junction