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Milestones toward Majorana-based quantum computing

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 (2016) Milestones toward Majorana-based quantum computing. Physical Review X, 6 (3). Art. No. 031016. ISSN 2160-3308. http://resolver.caltech.edu/CaltechAUTHORS:20160329-103533737

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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 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.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1103/PhysRevX.6.031016DOIArticle
https://journals.aps.org/prx/abstract/10.1103/PhysRevX.6.031016PublisherArticle
http://arxiv.org/abs/1511.05153arXivDiscussion Paper
Additional Information:© 2016 Published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Received 24 November 2015; revised manuscript received 8 April 2016; published 3 August 2016. We thank Sven Albrecht, Parsa Bonderson, Michael Freedman, Fabian Hassler, Takis Kontos, Ferdinand Kuemmeth, Olivier Landon-Cardinal, Roman Lutchyn, Karen Michaeli, Roger Mong, Felix von Oppen, Yuval Oreg, Nick Read, and Zhenghan Wang for illuminating discussions. We acknowledge support from Microsoft Research, the National Science Foundation through Grant No. DMR-1341822 (J. A.); the Alfred P. Sloan Foundation (J. A.); the Caltech Institute for Quantum Information and Matter, an NSF Physics Frontiers Center with support of the Gordon and Betty Moore Foundation through Grant No. GBMF1250; the Walter Burke Institute for Theoretical Physics at Caltech; the NSERC PGSD program (D. A.); the Crafoord Foundation (M. L. and M. H.) and the Swedish Research Council (M. L.); The Danish National Research Foundation, and the Villum Foundation (C. M.); The Danish Council for Independent Research/Natural Sciences, and Danmarks Nationalbank (J. F.). Part of this work was performed at the Aspen Center for Physics, which is supported by National Science Foundation Grant No. PHY-1066293 (R. V. M.). D. A., M. H., R. V. M., and A. H. contributed equally to this work.
Group:IQIM, Institute for Quantum Information and Matter, Walter Burke Institute for Theoretical Physics
Funders:
Funding AgencyGrant Number
Microsoft ResearchUNSPECIFIED
NSFDMR-1341822
Alfred P. Sloan FoundationUNSPECIFIED
Institute for Quantum Information and Matter (IQIM)UNSPECIFIED
Gordon and Betty Moore FoundationGBMF1250
Walter Burke Institute for Theoretical Physics, CaltechUNSPECIFIED
Natural Sciences and Engineering Research Council of Canada (NSERC)UNSPECIFIED
Crafoord FoundationUNSPECIFIED
Swedish Research CouncilUNSPECIFIED
Danish National Research FoundationUNSPECIFIED
Villum FoundationUNSPECIFIED
Danish Council for Independent ResearchUNSPECIFIED
Danmarks NationalbankUNSPECIFIED
NSFPHY-1066293
Record Number:CaltechAUTHORS:20160329-103533737
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20160329-103533737
Official Citation:Milestones Toward Majorana-Based Quantum Computing David Aasen, Michael Hell, Ryan V. Mishmash, Andrew Higginbotham, Jeroen Danon, Martin Leijnse, Thomas S. Jespersen, Joshua A. Folk, Charles M. Marcus, Karsten Flensberg, and Jason Alicea Phys. Rev. X 6, 031016
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:65740
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:29 Mar 2016 17:49
Last Modified:04 Aug 2016 23:14

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