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Milestones toward Majorana-based quantum computing (Conference Presentation)

Mishmash, Ryan V. and Aasen, David and Hell, Michael 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 (Conference Presentation). In: Spintronics IX. Proceedings of SPIE. No.9931. Society of Photo-Optical Instrumentation Engineers (SPIE) , Bellingham, WA, Art. No. 99313L. ISBN 9781510602533.

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We introduce a scheme for preparation, manipulation, and readout 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 readout schemes as well.

Item Type:Book Section
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Additional Information:© 2016 Society of Photo-Optical Instrumentation Engineers (SPIE).
Series Name:Proceedings of SPIE
Issue or Number:9931
Record Number:CaltechAUTHORS:20190828-155408422
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Official Citation:Ryan V. Mishmash, David Aasen, Michael Hell, Andrew Higginbotham, Jeroen Danon, Martin Leijnse, Thomas S. Jespersen, Joshua A. Folk, Charles M. Marcus, Karsten Flensberg, and Jason Alicea "Milestones toward Majorana-based quantum computing (Conference Presentation)", Proc. SPIE 9931, Spintronics IX, 99313L (4 November 2016);
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:98325
Deposited By: Tony Diaz
Deposited On:29 Aug 2019 14:45
Last Modified:03 Oct 2019 21:40

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