Angular multiplexing storage of light pulses and addressable optical buffer memory in Pr3+:Y2SiO5 based on electromagnetically induced transparency

We observed angular multiplexing storage of multiple light pulses in a Pr3+:Y2SiO5 crystal based on electromagnetically induced transparency. Addressable routing of stored light pulses with an angular resolution of similar to 1 degrees and without cross-talk between two neighboring channels, which serves as an addressable optical buffer memory, was demonstrated experimentally in a 3-mm Pr3+:Y2SiO5 crystal. Angular multiplexing storage of light pulses opens a way to manipulate light pulses selectively and in parallel, and therefore, is of important potential applications in quantum information processing and addressable all-optical delay lines and buffers.