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Milestones toward Majorana-based quantum computing

Aasen, David; Hell, Michael LU ; Mishmash, Ryan V.; Higginbotham, Andrew; Danon, Jeroen; Leijnse, Martin LU ; Jespersen, Thomas S.; Folk, Joshua A.; Marcus, Charles M. and Flensberg, Karsten, et al. (2016) In Physical Review X 6(3).
Abstract

We introduce a scheme for preparation, manipulation, and read out of Majorana zero modes in semiconducting wires with mesoscopic superconducting islands. Our approach synthesizes recent advances in materials growth with tools commonly used in quantum-dot experiments, including gate control of tunnel barriers and Coulomb effects, charge sensing, and charge pumping. We outline a sequence of milestones interpolating between zero-mode detection and quantum computing that includes (1) detection of fusion rules for non-Abelian anyons using either proximal charge sensors or pumped current, (2) validation of a prototype topological qubit, and (3) demonstration of non-Abelian statistics by braiding in a branched geometry. The first two... (More)

We introduce a scheme for preparation, manipulation, and read out of Majorana zero modes in semiconducting wires with mesoscopic superconducting islands. Our approach synthesizes recent advances in materials growth with tools commonly used in quantum-dot experiments, including gate control of tunnel barriers and Coulomb effects, charge sensing, and charge pumping. We outline a sequence of milestones interpolating between zero-mode detection and quantum computing that includes (1) detection of fusion rules for non-Abelian anyons using either proximal charge sensors or pumped current, (2) validation of a prototype topological qubit, and (3) demonstration of non-Abelian statistics by braiding in a branched geometry. The first two milestones require only a single wire with two islands, and additionally enable sensitive measurements of the system's excitation gap, quasiparticle poisoning rates, residual Majorana zero-mode splittings, and topological-qubit coherence times. These pre-braiding experiments can be adapted to other manipulation and read out schemes as well.

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Physical Review X
volume
6
issue
3
publisher
American Physical Society
external identifiers
  • scopus:84992593009
  • wos:000381474600001
ISSN
2160-3308
DOI
10.1103/PhysRevX.6.031016
language
English
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yes
id
90f8659b-bb60-44ae-888f-a42a92b331d0
date added to LUP
2017-02-21 11:01:45
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2017-11-19 04:37:57
@article{90f8659b-bb60-44ae-888f-a42a92b331d0,
  abstract     = {<p>We introduce a scheme for preparation, manipulation, and read out of Majorana zero modes in semiconducting wires with mesoscopic superconducting islands. Our approach synthesizes recent advances in materials growth with tools commonly used in quantum-dot experiments, including gate control of tunnel barriers and Coulomb effects, charge sensing, and charge pumping. We outline a sequence of milestones interpolating between zero-mode detection and quantum computing that includes (1) detection of fusion rules for non-Abelian anyons using either proximal charge sensors or pumped current, (2) validation of a prototype topological qubit, and (3) demonstration of non-Abelian statistics by braiding in a branched geometry. The first two milestones require only a single wire with two islands, and additionally enable sensitive measurements of the system's excitation gap, quasiparticle poisoning rates, residual Majorana zero-mode splittings, and topological-qubit coherence times. These pre-braiding experiments can be adapted to other manipulation and read out schemes as well.</p>},
  articleno    = {031016},
  author       = {Aasen, David and Hell, Michael and Mishmash, Ryan V. and Higginbotham, Andrew and Danon, Jeroen and Leijnse, Martin and Jespersen, Thomas S. and Folk, Joshua A. and Marcus, Charles M. and Flensberg, Karsten and Alicea, Jason},
  issn         = {2160-3308},
  language     = {eng},
  number       = {3},
  publisher    = {American Physical Society},
  series       = {Physical Review X},
  title        = {Milestones toward Majorana-based quantum computing},
  url          = {http://dx.doi.org/10.1103/PhysRevX.6.031016},
  volume       = {6},
  year         = {2016},
}