Finite-frequency noise in a topological superconducting wire

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.

Contribution for the special issue of Physica E in memory of Markus Büttiker. 9 pages, 7 figures

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Cited by in corpus (19)

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• Universal Majorana thermoelectric noise
• Fingerprints of Majorana bound states in Aharonov Bohm geometry
• Majorana finite frequency nonequilibrium quantum noise
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• Nonequilibrium Majorana fluctuations
• Majorana entropy revival via tunneling phases
• Majorana ensembles with fractional entropy and conductance in nanoscopic systems
• Majorana differential shot noise and its universal thermoelectric crossover
• Hanbury Brown and Twiss noise correlations in a topological superconductor beam splitter
• Dual Majorana universality in thermally induced nonequilibrium
• Nonequilibrium finite frequency resonances in differential quantum noise driven by Majorana interference
• Statistical correlations of currents flowing via proximized quantum dot
• Quantum Transport in Presence of Bound States -- Noise Power
• Thermoelectric fluctuations of interfering Majorana bound states
• Shot noise in NS junctions with Weyl superconductor
• Fluctuation response of a minimal Kitaev chain in nonequilibrium states
• Quantum theory for edge current and noise in two-dimensional topological superconductors
• Revealing universal Majorana fractionalization using differential shot noise and conductance in nonequilibrium states controlled by tunneling phases