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  Optical Manipulation of Domains in Chiral Topological Superconductors

Yu, T., Claassen, M., Kennes, D. M., & Sentef, M. A. (2020). Optical Manipulation of Domains in Chiral Topological Superconductors.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0007-3249-F Version Permalink: http://hdl.handle.net/21.11116/0000-0007-324A-E
Genre: Paper

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2010.00838.pdf (Preprint), 2MB
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2010.00838.pdf
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Downloaded from arxiv.org: 2020-10-13
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2020
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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 time scales. 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: 2020-10-02
 Publication Status: Published online
 Pages: 6
 Publishing info: -
 Table of Contents: -
 Rev. Type: No review
 Identifiers: arXiv: 2010.00838
 Degree: -

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