A quantum Galilean cannon is a 1D sequence of N hard-core particles with special mass ratios, and a hard wall; conservation laws due to the reflection group AN prevent both classical stochastization and quantum diffraction. It is realizable through specie-alternating mutually repulsive bosonic soliton trains. We show that an initial disentangled state can evolve into one where the heavy and light particles are entangled, and propose a sensor, containing Ntotal atoms, with a Ntotal times higher sensitivity than in a one-atom sensor with Ntotal repetitions.
@article{arxiv.1610.01060,
title = {Creating Entanglement Using Integrals of Motion},
author = {Maxim Olshanii and Thibault Scoquart and Dmitry Yampolsky and Vanja Dunjko and Steven Glenn Jackson},
journal= {arXiv preprint arXiv:1610.01060},
year = {2018}
}