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Floquet Majorana bound states in voltage-biased planar Josephson junctions

Peng, Changnan and Haim, Arbel and Karzig, Torsten and Peng, Yang and Refael, Gil (2021) Floquet Majorana bound states in voltage-biased planar Josephson junctions. Physical Review Research, 3 (2). Art. No. 023108. ISSN 2643-1564. doi:10.1103/PhysRevResearch.3.023108.

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We study a planar Josephson junction under an applied DC voltage bias in the presence of an in-plane magnetic field. Upon tuning the bias voltage across the junction V_J, the two ends of the junction are shown to simultaneously host both zero and π Majorana modes. These modes can be probed using either a scanning-tunneling-microscopy measurement or through resonant Andreev tunneling from a lead coupled to the junction. While these modes are mostly bound to the junction's ends, they can hybridize with the bulk by absorbing or emitting photons. We analyze this process both numerically and analytically, demonstrating that it can become negligible under typical experimental conditions. Transport signatures of the zero and π Majorana states are shown to be robust to moderate disorder.

Item Type:Article
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URLURL TypeDescription Paper
Peng, Changnan0000-0002-9331-2614
Karzig, Torsten0000-0003-0834-0547
Peng, Yang0000-0002-8868-2928
Additional Information:© 2021 Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Received 11 January 2021; revised 11 April 2021; accepted 13 April 2021; published 10 May 2021. This research was supported by the Institute of Quantum Information and Matter, an NSF Frontier Center funded by the Gordon and Betty Moore Foundation, the Packard Foundation, and the Simons Foundation. A.H. acknowledges support from the Walter Burke Institute for Theoretical Physics at the California Institute of Technology. The results of this work were obtained prior to the employment of A.H. at the Amazon Web Services Center for Quantum Computing. G.R. is also grateful for support through NSF DMR Grant No. 1839271. This work was performed in part at the Aspen Center for Physics, which is supported by National Science Foundation Grant No. PHY-1607611.
Group:Institute for Quantum Information and Matter, Walter Burke Institute for Theoretical Physics
Funding AgencyGrant Number
Institute for Quantum Information and Matter (IQIM)UNSPECIFIED
NSF Physics Frontiers CenterUNSPECIFIED
Gordon and Betty Moore FoundationUNSPECIFIED
David and Lucile Packard FoundationUNSPECIFIED
Simons FoundationUNSPECIFIED
Walter Burke Institute for Theoretical Physics, CaltechUNSPECIFIED
Issue or Number:2
Record Number:CaltechAUTHORS:20210105-133420695
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:107325
Deposited By: George Porter
Deposited On:05 Jan 2021 23:03
Last Modified:10 May 2021 20:43

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