Quantum revival for elastic waves in thin plate

被引：0
作者：
Marc Dubois
Gautier Lefebvre
Patrick Sebbah
机构：
[1] Institut Langevin,Department of Physics
[2] ESPCI ParisTech CNRS UMR7587,undefined
[3] 1 rue Jussieu,undefined
[4] The Jack and Pearl Resnick Institute for Advanced Technology,undefined
[5] Bar-Ilan University,undefined
来源：
The European Physical Journal Special Topics | 2017年 / 226卷
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摘要：
Quantum revival is described as the time-periodic reconstruction of a wave packet initially localized in space and time. This effect is expected in finite-size systems which exhibit commensurable discrete spectrum such as the infinite quantum well. Here, we report on the experimental observation of full and fractional quantum revival for classical waves in a two dimensional cavity. We consider flexural waves propagating in thin plates, as their quadratic dispersion at low frequencies mimics the dispersion relation of quantum systems governed by Schrödinger equation. Time-dependent excitation and measurement are performed at ultrasonic frequencies and reveal a periodic reconstruction of the initial elastic wave packet.
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页码：1593 / 1601
页数：8
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