Realizing a controllable network with multiple degrees of interaction is a challenge to physics and engineering. Here, we experimentally report an on-chip reconfigurable network based on nanoelectromechanical resonators with nearest-neighbor (NN) and next-nearest-neighbor (NNN) strong couplings. By applying different parametric voltages on the same on-chip device, we carry out perfect coherent transfer in NN and NNN coupled array networks. Moreover, the low-loss resonators ensure the desired evolution to achieve perfect transfer and the demonstration of the parity-dependent phase relation at transmission cycles. The realization of NNN couplings demonstrates the capability of engineering coherent coupling beyond a simple model of a NN coupled array of doubly clamped resonators. Our reconfigurable nanoelectromechanical network provides a highly tunable physical platform and offers the possibilities of investigating various interesting phenomena, such as topological transport, synchronization of networks, as well as metamaterials.
@article{arxiv.2009.00798,
title = {Perfect coherent transfer in an on-chip reconfigurable nanoelectromechanical network},
author = {Tian Tian and Shaochun Lin and Liang Zhang and Peiran Yin and Pu Huang and Changkui Duan and Liang Jiang and Jiangfeng Du},
journal= {arXiv preprint arXiv:2009.00798},
year = {2020}
}