



@article {1841,
	title = {Attractive Photons in a Quantum Nonlinear Medium},
	journal = {Nature (London)},
	volume = {502},
	year = {2013},
	pages = {71},
	url = {http://dx.doi.org/10.1038/nature12512},
	author = {Ofer Firstenberg and Thibault Peyronel and Qi-Yu Liang and Alexey V. Gorshkov and Mikhail D. Lukin and Vladan Vuletic}
}
