Experimental Observation of Temporal Pumping in Electromechanical Waveguides
- 2 March 2021
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 126 (9), 095501
- https://doi.org/10.1103/PhysRevLett.126.095501
Abstract
We experimentally demonstrate temporal pumping of elastic waves in an electromechanical waveguide. Temporal pumping exploits a virtual dimension mapped to time, enabling the generation and control of edge states, typical of two-dimensional systems, in a one-dimensional waveguide. We show experimentally that the temporal modulation of the stiffness drives the transfer of edge states from one boundary of the waveguide to the other. The considered implementation, that consists of an elastic waveguide coupled with tunable electrical impedances, allows the pumping to occur in a controllable manner. The framework presented herein opens new avenues for the manipulation and transport of information through elastic waves, with potential technological applications for digital delay lines and digitally controlled waveguides. This Letter also explores higher-dimensional topological physics using virtual dimensions mapped to time in electromechanical systems.Funding Information
- National Science Foundation
- Army Research Office (W911NF-18-1-0036)
- Ministero dell’Istruzione, dell’Università e della Ricerca
This publication has 61 references indexed in Scilit:
- Photonic topological insulatorsNature Materials, 2012
- Topological Phonon Modes and Their Role in Dynamic Instability of MicrotubulesPhysical Review Letters, 2009
- Consistency of the Adiabatic TheoremPhysical Review Letters, 2009
- Adiabatic theorems for linear and nonlinear HamiltoniansPhysical Review A, 2009
- Topological field theory of time-reversal invariant insulatorsPhysical Review B, 2008
- Adiabatic approximation in open systems: an alternative approachJournal of Physics B: Atomic, Molecular and Optical Physics, 2007
- Chern number and edge states in the integer quantum Hall effectPhysical Review Letters, 1993
- Quantization of particle transportPhysical Review B, 1983
- Quantized Hall Conductance in a Two-Dimensional Periodic PotentialPhysical Review Letters, 1982
- New Method for High-Accuracy Determination of the Fine-Structure Constant Based on Quantized Hall ResistancePhysical Review Letters, 1980