Unitary Subharmonic Response and Floquet Majorana Modes [electronic resource]
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Full Text (via OSTI) |
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| Format: | Government Document Electronic eBook |
| Language: | English |
| Published: |
Washington, D.C. : Oak Ridge, Tenn. :
United States. Department of Energy. Office of Science ; Distributed by the Office of Scientific and Technical Information, U.S. Department of Energy,
2020.
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| Abstract: | Detection and manipulation of excitations with non-Abelian statistics, such as Majorana fermions, are essential for creating topological quantum computers. To this end, we show the connection between the existence of such localized particles and the phenomenon of unitary subharmonic response (SR) in periodically driven systems. In particular, starting from highly nonequilibrium initial states, the unpaired Majorana modes exhibit spin oscillations with twice the driving period, are localized, and can have exponentially long lifetimes in clean systems. While the lifetime of SR is limited in translationally invariant systems, we show in this work that disorder can be engineered to stabilize the subharmonic response of Majorana modes. A viable observation of this phenomenon can be achieved using modern multiqubit hardware, such as superconducting circuits and cold atomic systems. |
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| Item Description: | Published through Scitech Connect. 08/20/2020. "Journal ID: ISSN 0031-9007." ": US2212234." Shtanko, Oles ; Movassagh, Ramis ; Univ. of Maryland, College Park, MD (United States) US Army Research Office (ARO) IBM Research Frontiers Institute. |
| Physical Description: | Size: Article No. 086804 : digital, PDF file. |