Research on Quantum Communication Repeaters

A program of research during the years 2001 through 2006 was devoted to building theoretical and practical foundations for the development of quantum repeaters as means of overcoming losses of photons in long-distance quantum communication systems. The idea underlying this research was to investigate means of utilizing suitably prepared ensembles of atoms (e.g. rubidium vapors) as means of storing and transferring the information encoded in the states of photons. The main accomplishments of this research, in approximate chronological order, include the following: