Overcoming dispersive spreading of quantum wave packets via periodic nonlinear kicking
Quantum Physics
2018-07-20 v2 Chaotic Dynamics
Abstract
We propose the suppression of dispersive spreading of wave packets governed by the free-space Schr\"odinger equation with a periodically pulsed nonlinear term. Using asymptotic analysis, we construct stroboscopically-dispersionless quantum states that are physically reminiscent of, but mathematically different from, the well-known one-soliton solutions of the nonlinear Schr\"odinger equation with a constant (time-independent) nonlinearity. Our analytics are strongly supported by full numerical simulations. The predicted dispersionless wave packets can move with arbitrary velocity and can be realized in experiments involving ultracold atomic gases with temporally controlled interactions.
Keywords
Cite
@article{arxiv.1805.09870,
title = {Overcoming dispersive spreading of quantum wave packets via periodic nonlinear kicking},
author = {Arseni Goussev and Phillipp Reck and Florian Moser and Antonio Moro and Cosimo Gorini and Klaus Richter},
journal= {arXiv preprint arXiv:1805.09870},
year = {2018}
}
Comments
7 pages, 3 figures