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  Optical manipulation of domains in chiral topological superconductors

Yu, T., Claassen, M., Kennes, D. M., & Sentef, M. A. (2021). Optical manipulation of domains in chiral topological superconductors. Physical Review Research, 3(1): 013253. doi:10.1103/PhysRevResearch.3.013253.

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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. Open access publication funded by the Max Planck Society.
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https://arxiv.org/abs/2010.00838 (Preprint)
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 Creators:
Yu, T.1, Author           
Claassen, M.2, 3, Author
Kennes, D. M.4, 5, Author           
Sentef, M. A.1, Author           
Affiliations:
1Theoretical Description of Pump-Probe Spectroscopies in Solids, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_3012828              
2Department of Physics, University of Pennsylvania, Philadelphia, ou_persistent22              
3Center for Computational Quantum Physics, Simons Foundation Flatiron Institute, New York, ou_persistent22              
4Theory Group, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_2266715              
5Institut für Theorie der Statistischen Physik, RWTH Aachen, ou_persistent22              

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 Abstract: Optical control of chirality in chiral superconductors bears potential for future topological quantum computing applications. When a chiral domain is written and erased by a laser spot, the Majorana modes around the domain can be manipulated on ultrafast timescales. Here we study topological superconductors with two chiral order parameters coupled via light fields by a time-dependent real-space Ginzburg-Landau approach. Continuous optical driving, or the application of supercurrent, hybridizes the two chiral order parameters, allowing one to induce and control the superconducting state beyond what is possible in equilibrium. We show that superconductivity can even be enhanced if the mutual coupling between two order parameters is sufficiently strong. Furthermore, we demonstrate that short optical pulses with spot size larger than a critical one can overcome a counteracting diffusion effect and write, erase, or move chiral domains. Surprisingly, these domains are found to be stable, which might enable optically programmable quantum computers in the future.

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Language(s): eng - English
 Dates: 2021-03-052020-10-022021-03-082021-03-18
 Publication Status: Published online
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 Rev. Type: Peer
 Identifiers: arXiv: 2010.00838
DOI: 10.1103/PhysRevResearch.3.013253
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Project name : T.Y. thanks Damian Hofmann for help on high-performance computing. T.Y. and M.A.S. acknowledge financial support by Deutsche Forschungsgemeinschaft through the Emmy Noether program (Grant No. SE 2558/2-1). The Flatiron Institute is a Division of the Simons Foundation. D.M.K. acknowledges support by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) via RTG 1995 and Germany's Excellence Strategy - Cluster of Excellence Matter and Light for Quantum Computing (ML4Q) EXC 2004/1 - 390534769. We acknowledge support from the Max Planck-New York City Center for Non-Equilibrium Quantum Phenomena.
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Title: Physical Review Research
Source Genre: Journal
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Publ. Info: College Park, Maryland, United States : American Physical Society (APS)
Pages: - Volume / Issue: 3 (1) Sequence Number: 013253 Start / End Page: - Identifier: ISSN: 2643-1564
CoNE: https://pure.mpg.de/cone/journals/resource/2643-1564