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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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.
|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|
|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|
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|Deposited By:||Tony Diaz|
|Deposited On:||29 Mar 2016 17:49|
|Last Modified:||04 Aug 2016 23:14|
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