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Detecting Majorana modes by readout of poisoning-induced parity flips

Schulenborg, Jens ; Krøjer, Svend ; Burrello, Michele ; Leijnse, Martin LU and Flensberg, Karsten (2023) In Physical Review B 107(12).
Abstract

Reading out the parity degree of freedom of Majorana bound states is key to demonstrating their non-Abelian exchange properties. Here, we present a low-energy model describing localized edge states in a two-arm device. We study parity-to-charge conversion based on coupling the superconductor bound states to a quantum dot whose charge is read out by a sensor. The dynamics of the system, including the readout device, is analyzed in full using a quantum-jump approach. We show how the resulting signal and signal-to-noise ratio differentiates between local Majorana and Andreev bound states.

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author
; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review B
volume
107
issue
12
article number
L121401
publisher
American Physical Society
external identifiers
  • scopus:85150931915
ISSN
2469-9950
DOI
10.1103/PhysRevB.107.L121401
language
English
LU publication?
yes
id
1e1302c4-a8b6-4ef6-9bd7-c6b1650cd074
date added to LUP
2023-05-23 11:15:10
date last changed
2023-11-08 06:11:25
@article{1e1302c4-a8b6-4ef6-9bd7-c6b1650cd074,
  abstract     = {{<p>Reading out the parity degree of freedom of Majorana bound states is key to demonstrating their non-Abelian exchange properties. Here, we present a low-energy model describing localized edge states in a two-arm device. We study parity-to-charge conversion based on coupling the superconductor bound states to a quantum dot whose charge is read out by a sensor. The dynamics of the system, including the readout device, is analyzed in full using a quantum-jump approach. We show how the resulting signal and signal-to-noise ratio differentiates between local Majorana and Andreev bound states.</p>}},
  author       = {{Schulenborg, Jens and Krøjer, Svend and Burrello, Michele and Leijnse, Martin and Flensberg, Karsten}},
  issn         = {{2469-9950}},
  language     = {{eng}},
  number       = {{12}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review B}},
  title        = {{Detecting Majorana modes by readout of poisoning-induced parity flips}},
  url          = {{http://dx.doi.org/10.1103/PhysRevB.107.L121401}},
  doi          = {{10.1103/PhysRevB.107.L121401}},
  volume       = {{107}},
  year         = {{2023}},
}