Coherent perfect absorption of nonlinear matter waves
Abstract
Coherent perfect absorption is the complete extinction of incoming radiation by a complex potential in a physical system supporting wave propagation. The concept was proven for linear waves in variety of systems including light interacting with absorbing scatterers, plasmonic metasurfaces and graphene films, as well as sound waves. We extend the paradigm to coherent perfect absorption of nonlinear waves and experimentally demonstrate it for matter waves in an atomic Bose-Einstein condensate. Coherent absorption of nonlinear matter waves is achieved easier than its linear analogs because the strength of two-body interactions offers additional freedom for control. Implementation of the coherent perfect absorber of Bose-Einstein condensates paves the way towards broad exploitation of the phenomenon in nonlinear optics, exciton-polariton condensates, acoustics, and other areas of nonlinear physics. It also opens perspectives for designing atomic laser.
Keywords
Cite
@article{arxiv.1808.10726,
title = {Coherent perfect absorption of nonlinear matter waves},
author = {Andreas Müllers and Bodhaditya Santra and Christian Baals and Jian Jiang and Jens Benary and Ralf Labouvie and Dmitry A. Zezyulin and Vladimir V. Konotop and Herwig Ott},
journal= {arXiv preprint arXiv:1808.10726},
year = {2018}
}