Shot noise signatures of Majorana-assisted transport in an Aharonov-Bohm interferometer
Abstract
In this work, we investigate the finite-bias charge current, shot noise, and Fano factor in an Aharonov-Bohm interferometer composed of two parallel quantum dots, each side-coupled to a topological superconducting nanowire represented by an effective Kitaev chain hosting Majorana bound states at its ends. The transport properties are calculated using the nonequilibrium Green's function formalism within the equation-of-motion approach. Our results show that coupling to the Majorana bound states significantly modifies the interference pattern, producing distinctive signatures in the current, shot noise, and Fano factor. These signatures are particularly pronounced at the half-flux condition, where destructive interference suppresses the conventional transport background and enhances the visibility of Majorana-assisted transport. These findings demonstrate that finite-bias shot-noise spectroscopy provides a sensitive indirect probe of Majorana bound states in hybrid superconducting-nanowire interferometers.
Related
- Transport theory for a generic two-arm co-propagating Majorana interferometer with Majorana fermion and edge vortex tunneling
- Rotational symmetry and common-mode phase drift in a counter-wound S-shaped Aharonov--Bohm interferometer
- DC Conductance of X-shaped Majorana Interferometer reveals Non-Abelian Anyon Statistics
- Quantum Noise from Massive Lorentz--Violating Gravitons: Interferometer Signatures in Very Special Linear Gravity
- Tunable flat bands and their signatures in electronic specific heat of an Aharonov-Bohm triangular quantum network
BibTeX
@misc{romanperez2026shot,
title = {{Shot noise signatures of Majorana-assisted transport in an Aharonov-Bohm interferometer}},
author = {Ignacio Román-Pérez and Juan Pablo Ramos-Andrade and Pedro Orellana and Luis Rosales},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.15966},
eprint = {2609.15966},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.15966},
}
RIS
TY - UNPB
TI - Shot noise signatures of Majorana-assisted transport in an Aharonov-Bohm interferometer
AU - Ignacio Román-Pérez
AU - Juan Pablo Ramos-Andrade
AU - Pedro Orellana
AU - Luis Rosales
PY - 2026
DA - 2026/09/14
PB - arXiv
DO - 10.48550/arxiv.2609.15966
UR - https://arxiv.org/abs/2609.15966
AB - In this work, we investigate the finite-bias charge current, shot noise, and Fano factor in an Aharonov-Bohm interferometer composed of two parallel quantum dots, each side-coupled to a topological superconducting nanowire represented by an effective Kitaev chain hosting Majorana bound states at its ends. The transport properties are calculated using the nonequilibrium Green's function formalism within the equation-of-motion approach. Our results show that coupling to the Majorana bound states significantly modifies the interference pattern, producing distinctive signatures in the current, shot noise, and Fano factor. These signatures are particularly pronounced at the half-flux condition, where destructive interference suppresses the conventional transport background and enhances the visibility of Majorana-assisted transport. These findings demonstrate that finite-bias shot-noise spectroscopy provides a sensitive indirect probe of Majorana bound states in hybrid superconducting-nanowire interferometers.
ER -