With quantum interference of two-path spontaneous emissions, we propose a novel scheme to coherently control the atom--photon momentum entanglement through atomic internal coherence. A novel phenomenon called ``momentum phase entanglement'' is reported, and we found, under certain conditions, that more controllable entangled state can be produced with super--high degree of entanglement.
@article{arxiv.0712.2563,
title = {Atom--photon momentum entanglement with quantum interference},
author = {Rui Guo and Hong Guo},
journal= {arXiv preprint arXiv:0712.2563},
year = {2007}
}