Finite elements computational modeling of coupled elastic waveguides
Publisher
AMER INST PHYSICSCitation
Calderin, L., Hasan, M. A., Runge, K., & Deymier, P. A. (2020). Finite elements computational modeling of coupled elastic waveguides. Journal of Applied Physics, 128(4), 045110.Journal
JOURNAL OF APPLIED PHYSICSRights
© 2020 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).Collection Information
This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.Abstract
The theoretical study of one-dimensional-infinite systems of elastically coupled parallel waveguides has established the existence of band structures with pseudo-spin characteristics. Those systems, which are named f-bits, have been shown to exhibit a spinor character associated with directional degrees of freedom, which makes them potential quantum mechanical analogs. The realization of such systems is challenged by the three-dimensional and finite nature of physical elastic waveguides. We address this problem, and with it the design of f-bits in general, by developing finite elements models based on COMSOL Multiphysics (R). We model systems of one or more coupled finite length Al rods. The analysis of their dispersion relations, transmission spectra, and amplitudes establishes their phi-bit character. For three coupled finite length Al rods, the elastic field is associated with wavefunctions, tensor products of a spinor part related to the directional degrees of freedom, and an orbital angular momentum part representing the phase of the coupled waveguides. We demonstrate the possibility of creating non-separable states between these degrees of freedom. (c) 2020 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).Note
Open access articleISSN
0021-8979EISSN
1089-7550Version
Final published versionae974a485f413a2113503eed53cd6c53
10.1063/1.5127207
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Except where otherwise noted, this item's license is described as © 2020 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).