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Revealing topological superconductivity in extended quantum spin Hall Josephson junctions

Lee, Shu-Ping and Michaeli, Karen and Alicea, Jason and Yacoby, Amir (2014) Revealing topological superconductivity in extended quantum spin Hall Josephson junctions. Physical Review Letters, 113 (19). Art. No. 197001. ISSN 0031-9007. http://resolver.caltech.edu/CaltechAUTHORS:20140409-130620943

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Abstract

Quantum spin Hall–superconductor hybrids are promising sources of topological superconductivity and Majorana modes, particularly given recent progress on HgTe and InAs/GaSb. We propose a new method of revealing topological superconductivity in extended quantum spin Hall Josephson junctions supporting “fractional Josephson currents.” Specifically, we show that as one threads magnetic flux between the superconductors, the critical current traces an interference pattern featuring sharp fingerprints of topological superconductivity—even when noise spoils parity conservation.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://arxiv.org/abs/1403.2747arXivDiscussion Paper
http://dx.doi.org/10.1103/PhysRevLett.113.197001 DOIArticle
http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.113.197001PublisherArticle
Additional Information:© 2014 American Physical Society. Received 21 March 2014; published 6 November 2014. We are indebted to D. Clarke, J. Meyer, J. Sau, A. Stern, D. van Harlingen, and especially B. Halperin, S. Hart, and H. Ren for enlightening discussions. We also acknowledge funding from the NSF through Grants No. DMR-1341822 (S.-P. L. and J. A.) and No. DMR-1206016 (A. Y.), the Alfred P. Sloan Foundation (J. A.), a grant from Microsoft Corporation (A. Y.), and the Caltech Institute for Quantum Information and Matter, an NSF Physics Frontiers Center, with support of the Gordon and Betty Moore Foundation. A. Y. is also supported by the STC Center for Integrated Quantum Materials, NSF Grant No. DMR-1231319.
Group:IQIM, Institute for Quantum Information and Matter, Walter Burke Institute for Theoretical Physics
Funders:
Funding AgencyGrant Number
NSFDMR-1341822
NSFDMR-1206016
Alfred P. Sloan FoundationUNSPECIFIED
Microsoft CorporationUNSPECIFIED
Institute for Quantum Information and Matter (IQIM)UNSPECIFIED
NSF Physics Frontiers CenterUNSPECIFIED
Gordon and Betty Moore FoundationUNSPECIFIED
STC Center for Integrated Quantum MaterialsUNSPECIFIED
NSFDMR-1231319
Classification Code:PACS: 74.45.+c, 74.50.+r
Record Number:CaltechAUTHORS:20140409-130620943
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20140409-130620943
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:44827
Collection:CaltechAUTHORS
Deposited By: Aucoeur Ngo
Deposited On:09 Apr 2014 22:45
Last Modified:18 Dec 2014 19:49

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