arXiv:0807.1250 · Physical Review Letters
Multimode Memories in Atomic Ensembles
J. Nunn, K. Reim, K. C. Lee, Virginia O. Lorenz, Benjamin Sussman, Ian A. Walmsley, Dieter Jaksch
Abstract
The ability to store multiple optical modes in a quantum memory allows for increased efficiency of quantum communication and computation. Here we compute the multimode capacity of a variety of quantum memory protocols based on light storage in ensembles of atoms. We find that adding a controlled inhomogeneous broadening improves this capacity significantly.